40064045 has 32 divisors (see below), whose sum is σ = 57881088. Its totient is φ = 26028288.

The previous prime is 40064033. The next prime is 40064077. The reversal of 40064045 is 54046004.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 40064045 - 2¹² = 40059949 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (23).

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 40064045.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 126227 + ... + 126543.

It is an arithmetic number, because the mean of its divisors is an integer number (1808784).

Almost surely, 2^40064045 is an apocalyptic number.

It is an amenable number.

40064045 is a deficient number, since it is larger than the sum of its proper divisors (17817043).

40064045 is a wasteful number, since it uses less digits than its factorization.

40064045 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 509.

The product of its (nonzero) digits is 1920, while the sum is 23.

The square root of 40064045 is about 6329.6164970715. The cubic root of 40064045 is about 342.1776176889.

The spelling of 40064045 in words is "forty million, sixty-four thousand, forty-five".