8978401808 has 20 divisors (see below), whose sum is σ = 18151987008. Its totient is φ = 4294018080.

The previous prime is 8978401807. The next prime is 8978401819. The reversal of 8978401808 is 8081048798.

It is a super-2 number, since 2×8978401808² (a number of 21 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 8978401808.

It is not an unprimeable number, because it can be changed into a prime (8978401801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 12198548 + ... + 12199283.

Almost surely, 2^8978401808 is an apocalyptic number.

It is an amenable number.

8978401808 is an abundant number, since it is smaller than the sum of its proper divisors (9173585200).

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

8978401808 is a wasteful number, since it uses less digits than its factorization.

8978401808 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 24397862 (or 24397856 counting only the distinct ones).

The product of its (nonzero) digits is 1032192, while the sum is 53.

The square root of 8978401808 is about 94754.4289624501. The cubic root of 8978401808 is about 2078.4185624738.

The spelling of 8978401808 in words is "eight billion, nine hundred seventy-eight million, four hundred one thousand, eight hundred eight".