40920808 has 16 divisors (see below), whose sum is σ = 77518980. Its totient is φ = 20249088.

The previous prime is 40920791. The next prime is 40920917. The reversal of 40920808 is 80802904.

It can be written as a sum of positive squares in 2 ways, for example, as 39715204 + 1205604 = 6302^2 + 1098^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 40920808.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 25591 + ... + 27142.

Almost surely, 2^40920808 is an apocalyptic number.

It is an amenable number.

40920808 is a deficient number, since it is larger than the sum of its proper divisors (36598172).

40920808 is a wasteful number, since it uses less digits than its factorization.

40920808 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52836 (or 52832 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 31.

The square root of 40920808 is about 6396.9373922214. The cubic root of 40920808 is about 344.5995718252.

The spelling of 40920808 in words is "forty million, nine hundred twenty thousand, eight hundred eight".