40217916 has 24 divisors (see below), whose sum is σ = 93948624. Its totient is φ = 13390720.

The previous prime is 40217909. The next prime is 40217923. The reversal of 40217916 is 61971204.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (40217909) and next prime (40217923).

It is a hoax number, since the sum of its digits (30) coincides with the sum of the digits of its distinct prime factors.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 15256 + ... + 17696.

It is an arithmetic number, because the mean of its divisors is an integer number (3914526).

Almost surely, 2^40217916 is an apocalyptic number.

It is an amenable number.

40217916 is an abundant number, since it is smaller than the sum of its proper divisors (53730708).

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

40217916 is a wasteful number, since it uses less digits than its factorization.

40217916 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3821 (or 3819 counting only the distinct ones).

The product of its (nonzero) digits is 3024, while the sum is 30.

The square root of 40217916 is about 6341.7596927036. The cubic root of 40217916 is about 342.6151167909.

The spelling of 40217916 in words is "forty million, two hundred seventeen thousand, nine hundred sixteen".