40632889 has 6 divisors (see below), whose sum is σ = 44662730. Its totient is φ = 36938880.

The previous prime is 40632877. The next prime is 40632901. The reversal of 40632889 is 98823604.

It is an interprime number because it is at equal distance from previous prime (40632877) and next prime (40632901).

It can be written as a sum of positive squares in only one way, i.e., 40005625 + 627264 = 6325^2 + 792^2 .

It is not a de Polignac number, because 40632889 - 2¹³ = 40624697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (40632829) 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, 167784 + ... + 168025.

Almost surely, 2^40632889 is an apocalyptic number.

It is an amenable number.

40632889 is a deficient number, since it is larger than the sum of its proper divisors (4029841).

40632889 is a wasteful number, since it uses less digits than its factorization.

40632889 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 335831 (or 335820 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 40.

The square root of 40632889 is about 6374.3932260255. The cubic root of 40632889 is about 343.7894674684.

The spelling of 40632889 in words is "forty million, six hundred thirty-two thousand, eight hundred eighty-nine".