40939624 has 24 divisors (see below), whose sum is σ = 84376530. Its totient is φ = 18608480.

The previous prime is 40939597. The next prime is 40939631. The reversal of 40939624 is 42693904.

It can be written as a sum of positive squares in only one way, i.e., 38217124 + 2722500 = 6182^2 + 1650^2 .

It is a super-2 number, since 2×40939624² = 3352105626522752, which contains 22 as substring.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 20179 + ... + 22114.

Almost surely, 2^40939624 is an apocalyptic number.

40939624 is a gapful number since it is divisible by the number (44) formed by its first and last digit.

It is an amenable number.

40939624 is an abundant number, since it is smaller than the sum of its proper divisors (43436906).

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

40939624 is a wasteful number, since it uses less digits than its factorization.

40939624 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 42321 (or 42306 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 37.

The square root of 40939624 is about 6398.4079269768. The cubic root of 40939624 is about 344.6523810788.

The spelling of 40939624 in words is "forty million, nine hundred thirty-nine thousand, six hundred twenty-four".