40791656 has 16 divisors (see below), whose sum is σ = 77781600. Its totient is φ = 20049904.

The previous prime is 40791643. The next prime is 40791659. The reversal of 40791656 is 65619704.

It is not an unprimeable number, because it can be changed into a prime (40791659) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42740 + ... + 43683.

It is an arithmetic number, because the mean of its divisors is an integer number (4861350).

Almost surely, 2^40791656 is an apocalyptic number.

It is an amenable number.

40791656 is a deficient number, since it is larger than the sum of its proper divisors (36989944).

40791656 is a wasteful number, since it uses less digits than its factorization.

40791656 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 86488 (or 86484 counting only the distinct ones).

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 40791656 is about 6386.8345837355. The cubic root of 40791656 is about 344.2366543551.

The spelling of 40791656 in words is "forty million, seven hundred ninety-one thousand, six hundred fifty-six".