40537049 has 4 divisors (see below), whose sum is σ = 46328064. Its totient is φ = 34746036.

The previous prime is 40537043. The next prime is 40537073. The reversal of 40537049 is 94073504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 40537049 - 2¹² = 40532953 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (40537043) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2895497 + ... + 2895510.

It is an arithmetic number, because the mean of its divisors is an integer number (11582016).

Almost surely, 2^40537049 is an apocalyptic number.

It is an amenable number.

40537049 is a deficient number, since it is larger than the sum of its proper divisors (5791015).

40537049 is an equidigital number, since it uses as much as digits as its factorization.

40537049 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5791014.

The product of its (nonzero) digits is 15120, while the sum is 32.

The square root of 40537049 is about 6366.8712096288. The cubic root of 40537049 is about 343.5189581791.

The spelling of 40537049 in words is "forty million, five hundred thirty-seven thousand, forty-nine".