40399032 has 16 divisors (see below), whose sum is σ = 100997640. Its totient is φ = 13466336.

The previous prime is 40398977. The next prime is 40399039. The reversal of 40399032 is 23099304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (40399039) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 841623 + ... + 841670.

Almost surely, 2^40399032 is an apocalyptic number.

It is an amenable number.

40399032 is an abundant number, since it is smaller than the sum of its proper divisors (60598608).

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

40399032 is a wasteful number, since it uses less digits than its factorization.

40399032 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1683302 (or 1683298 counting only the distinct ones).

The product of its (nonzero) digits is 5832, while the sum is 30.

The square root of 40399032 is about 6356.0232850423. The cubic root of 40399032 is about 343.1286537811.

The spelling of 40399032 in words is "forty million, three hundred ninety-nine thousand, thirty-two".