40431616 has 26 divisors (see below), whose sum is σ = 80861552. Its totient is φ = 20213760.

The previous prime is 40431571. The next prime is 40431623. The reversal of 40431616 is 61613404.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 840 + ... + 9031.

Almost surely, 2^40431616 is an apocalyptic number.

It is an amenable number.

40431616 is a deficient number, since it is larger than the sum of its proper divisors (40429936).

40431616 is an frugal number, since it uses more digits than its factorization.

40431616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9895 (or 9873 counting only the distinct ones).

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 40431616 is about 6358.5860063382. The cubic root of 40431616 is about 343.2208795842.

The spelling of 40431616 in words is "forty million, four hundred thirty-one thousand, six hundred sixteen".