40392916 has 12 divisors (see below), whose sum is σ = 70879732. Its totient is φ = 20141568.

The previous prime is 40392887. The next prime is 40392931. The reversal of 40392916 is 61929304.

It can be written as a sum of positive squares in 2 ways, for example, as 21068100 + 19324816 = 4590^2 + 4396^2 .

It is a hoax number, since the sum of its digits (34) 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 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, 12045 + ... + 15028.

Almost surely, 2^40392916 is an apocalyptic number.

It is an amenable number.

40392916 is a deficient number, since it is larger than the sum of its proper divisors (30486816).

40392916 is a wasteful number, since it uses less digits than its factorization.

40392916 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 27450 (or 27448 counting only the distinct ones).

The product of its (nonzero) digits is 11664, while the sum is 34.

The square root of 40392916 is about 6355.5421483930. The cubic root of 40392916 is about 343.1113375184. Note that the first 3 decimals are identical.

The spelling of 40392916 in words is "forty million, three hundred ninety-two thousand, nine hundred sixteen".