9990085308 has 36 divisors (see below), whose sum is σ = 27115947432. Its totient is φ = 2854309920.

The previous prime is 9990085307. The next prime is 9990085333. The reversal of 9990085308 is 8035800999.

It is a super-2 number, since 2×9990085308² (a number of 21 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9990085307) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 8494383 + ... + 8495558.

It is an arithmetic number, because the mean of its divisors is an integer number (753220762).

Almost surely, 2^9990085308 is an apocalyptic number.

9990085308 is a gapful number since it is divisible by the number (98) formed by its first and last digit.

It is an amenable number.

9990085308 is an abundant number, since it is smaller than the sum of its proper divisors (17125862124).

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

9990085308 is a wasteful number, since it uses less digits than its factorization.

9990085308 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16989962 (or 16989953 counting only the distinct ones).

The product of its (nonzero) digits is 699840, while the sum is 51.

The square root of 9990085308 is about 99950.4142462651. The cubic root of 9990085308 is about 2153.7224360412.

The spelling of 9990085308 in words is "nine billion, nine hundred ninety million, eighty-five thousand, three hundred eight".