40004365 has 16 divisors (see below), whose sum is σ = 49102848. Its totient is φ = 31280256.

The previous prime is 40004357. The next prime is 40004389. The reversal of 40004365 is 56340004.

It is a cyclic number.

It is not a de Polignac number, because 40004365 - 2³ = 40004357 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45924 + ... + 46786.

It is an arithmetic number, because the mean of its divisors is an integer number (3068928).

Almost surely, 2^40004365 is an apocalyptic number.

It is an amenable number.

40004365 is a deficient number, since it is larger than the sum of its proper divisors (9098483).

40004365 is a wasteful number, since it uses less digits than its factorization.

40004365 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1068.

The product of its (nonzero) digits is 1440, while the sum is 22.

The square root of 40004365 is about 6324.9003944726. The cubic root of 40004365 is about 342.0076289579.

Adding to 40004365 its reverse (56340004), we get a palindrome (96344369).

The spelling of 40004365 in words is "forty million, four thousand, three hundred sixty-five".