40464457 has 12 divisors (see below), whose sum is σ = 44820468. Its totient is φ = 36502400.

The previous prime is 40464443. The next prime is 40464481. The reversal of 40464457 is 75446404.

It can be written as a sum of positive squares in 2 ways, for example, as 12702096 + 27762361 = 3564^2 + 5269^2 .

It is a de Polignac number, because none of the positive numbers 2^k-40464457 is a prime.

It is not an unprimeable number, because it can be changed into a prime (40464427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 15357 + ... + 17797.

It is an arithmetic number, because the mean of its divisors is an integer number (3735039).

Almost surely, 2^40464457 is an apocalyptic number.

It is an amenable number.

40464457 is a deficient number, since it is larger than the sum of its proper divisors (4356011).

40464457 is a wasteful number, since it uses less digits than its factorization.

40464457 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2600 (or 2589 counting only the distinct ones).

The product of its (nonzero) digits is 53760, while the sum is 34.

The square root of 40464457 is about 6361.1678959135. The cubic root of 40464457 is about 343.3137826762.

The spelling of 40464457 in words is "forty million, four hundred sixty-four thousand, four hundred fifty-seven".