9920808474 has 16 divisors (see below), whose sum is σ = 19891600608. Its totient is φ = 3298605552.

The previous prime is 9920808463. The next prime is 9920808481. The reversal of 9920808474 is 4748080299.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2080072 + ... + 2084835.

It is an arithmetic number, because the mean of its divisors is an integer number (1243225038).

Almost surely, 2^9920808474 is an apocalyptic number.

9920808474 is an abundant number, since it is smaller than the sum of its proper divisors (9970792134).

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

9920808474 is a wasteful number, since it uses less digits than its factorization.

9920808474 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4165309.

The product of its (nonzero) digits is 1161216, while the sum is 51.

The square root of 9920808474 is about 99603.2553383673. The cubic root of 9920808474 is about 2148.7325122732.

The spelling of 9920808474 in words is "nine billion, nine hundred twenty million, eight hundred eight thousand, four hundred seventy-four".