1040449537 has 4 divisors (see below), whose sum is σ = 1041308500. Its totient is φ = 1039590576.

The previous prime is 1040449523. The next prime is 1040449541. The reversal of 1040449537 is 7359440401.

It is a Cunningham number, because it is equal to 32256²+1.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7359440401 = 37441 ⋅196561.

It can be written as a sum of positive squares in 2 ways, for example, as 42458256 + 997991281 = 6516^2 + 31591^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1040449537 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1040449496 and 1040449505.

It is not an unprimeable number, because it can be changed into a prime (1040441537) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 427662 + ... + 430087.

It is an arithmetic number, because the mean of its divisors is an integer number (260327125).

It is a Proth number, since it is equal to 3969 ⋅ 2¹⁸ + 1 and 3969 < 2¹⁸.

Almost surely, 2^1040449537 is an apocalyptic number.

It is an amenable number.

1040449537 is a deficient number, since it is larger than the sum of its proper divisors (858963).

1040449537 is an equidigital number, since it uses as much as digits as its factorization.

1040449537 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 858962.

The product of its (nonzero) digits is 60480, while the sum is 37.

The square root of 1040449537 is about 32256.0000155010. Note that the first 4 decimals coincide. The cubic root of 1040449537 is about 1013.3053612022.

Adding to 1040449537 its reverse (7359440401), we get a palindrome (8399889938).

The spelling of 1040449537 in words is "one billion, forty million, four hundred forty-nine thousand, five hundred thirty-seven".