40779808 has 24 divisors (see below), whose sum is σ = 80806572. Its totient is φ = 20257536.

The previous prime is 40779803. The next prime is 40779811. The reversal of 40779808 is 80897704.

It can be written as a sum of positive squares in 2 ways, for example, as 40094224 + 685584 = 6332^2 + 828^2 .

It is not an unprimeable number, because it can be changed into a prime (40779803) 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, 966 + ... + 9082.

Almost surely, 2^40779808 is an apocalyptic number.

It is an amenable number.

40779808 is a deficient number, since it is larger than the sum of its proper divisors (40026764).

40779808 is a wasteful number, since it uses less digits than its factorization.

40779808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8284 (or 8276 counting only the distinct ones).

The product of its (nonzero) digits is 112896, while the sum is 43.

The square root of 40779808 is about 6385.9069833501. The cubic root of 40779808 is about 344.2033231038.

The spelling of 40779808 in words is "forty million, seven hundred seventy-nine thousand, eight hundred eight".