8404420990508 has 12 divisors (see below), whose sum is σ = 15572897717832. Its totient is φ = 3955021642560.

The previous prime is 8404420990439. The next prime is 8404420990513. The reversal of 8404420990508 is 8050990244048.

It is a happy number.

It is a hoax number, since the sum of its digits (53) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 8404420990508.

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, 61797213098 + ... + 61797213233.

It is an arithmetic number, because the mean of its divisors is an integer number (1297741476486).

Almost surely, 2^{8404420990508} is an apocalyptic number.

It is an amenable number.

8404420990508 is a deficient number, since it is larger than the sum of its proper divisors (7168476727324).

8404420990508 is a wasteful number, since it uses less digits than its factorization.

8404420990508 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 123594426352 (or 123594426350 counting only the distinct ones).

The product of its (nonzero) digits is 3317760, while the sum is 53.

The spelling of 8404420990508 in words is "eight trillion, four hundred four billion, four hundred twenty million, nine hundred ninety thousand, five hundred eight".