40438916 has 36 divisors (see below), whose sum is σ = 86662800. Its totient is φ = 16417296.

The previous prime is 40438889. The next prime is 40438927. The reversal of 40438916 is 61983404.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1706 + ... + 9153.

It is an arithmetic number, because the mean of its divisors is an integer number (2407300).

Almost surely, 2^40438916 is an apocalyptic number.

It is an amenable number.

40438916 is an abundant number, since it is smaller than the sum of its proper divisors (46223884).

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

40438916 is a wasteful number, since it uses less digits than its factorization.

40438916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10896 (or 10887 counting only the distinct ones).

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 40438916 is about 6359.1600074224. The cubic root of 40438916 is about 343.2415347207.

The spelling of 40438916 in words is "forty million, four hundred thirty-eight thousand, nine hundred sixteen".