40367591449 has 2 divisors, whose sum is σ = 40367591450. Its totient is φ = 40367591448.

The previous prime is 40367591447. The next prime is 40367591461. The reversal of 40367591449 is 94419576304.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 39045760000 + 1321831449 = 197600^2 + 36357^2 .

It is a cyclic number.

It is not a de Polignac number, because 40367591449 - 2¹ = 40367591447 is a prime.

Together with 40367591447, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 40367591396 and 40367591405.

It is not a weakly prime, because it can be changed into another prime (40367591447) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 20183795724 + 20183795725.

It is an arithmetic number, because the mean of its divisors is an integer number (20183795725).

Almost surely, 2^40367591449 is an apocalyptic number.

It is an amenable number.

40367591449 is a deficient number, since it is larger than the sum of its proper divisors (1).

40367591449 is an equidigital number, since it uses as much as digits as its factorization.

40367591449 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3265920, while the sum is 52.

The spelling of 40367591449 in words is "forty billion, three hundred sixty-seven million, five hundred ninety-one thousand, four hundred forty-nine".