40413644 has 12 divisors (see below), whose sum is σ = 70845768. Its totient is φ = 20172000.

The previous prime is 40413629. The next prime is 40413647. The reversal of 40413644 is 44631404.

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (40413647) 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, 6002 + ... + 10809.

It is an arithmetic number, because the mean of its divisors is an integer number (5903814).

Almost surely, 2^40413644 is an apocalyptic number.

It is an amenable number.

40413644 is a deficient number, since it is larger than the sum of its proper divisors (30432124).

40413644 is a wasteful number, since it uses less digits than its factorization.

40413644 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17416 (or 17414 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 26.

The square root of 40413644 is about 6357.1726419848. The cubic root of 40413644 is about 343.1700177386.

The spelling of 40413644 in words is "forty million, four hundred thirteen thousand, six hundred forty-four".