40659804 has 18 divisors (see below), whose sum is σ = 102779040. Its totient is φ = 13553256.

The previous prime is 40659803. The next prime is 40659859. The reversal of 40659804 is 40895604.

It is a tau number, because it is divible by the number of its divisors (18).

It is a super-2 number, since 2×40659804² = 3306439322636832, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36), and also a Moran number because the ratio is a prime number: 1129439 = 40659804 / (4 + 0 + 6 + 5 + 9 + 8 + 0 + 4).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40659803) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 564684 + ... + 564755.

Almost surely, 2^40659804 is an apocalyptic number.

It is an amenable number.

40659804 is an abundant number, since it is smaller than the sum of its proper divisors (62119236).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

40659804 is a wasteful number, since it uses less digits than its factorization.

40659804 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1129449 (or 1129444 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 36.

The square root of 40659804 is about 6376.5040578674. The cubic root of 40659804 is about 343.8653587921.

The spelling of 40659804 in words is "forty million, six hundred fifty-nine thousand, eight hundred four".