9970001990 has 16 divisors (see below), whose sum is σ = 19326465648. Its totient is φ = 3681231456.

The previous prime is 9970001989. The next prime is 9970002001. The reversal of 9970001990 is 991000799.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38346032 + ... + 38346291.

It is an arithmetic number, because the mean of its divisors is an integer number (1207904103).

Almost surely, 2^9970001990 is an apocalyptic number.

9970001990 is a deficient number, since it is larger than the sum of its proper divisors (9356463658).

9970001990 is a wasteful number, since it uses less digits than its factorization.

9970001990 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 76692343.

The product of its (nonzero) digits is 45927, while the sum is 44.

The square root of 9970001990 is about 99849.8972958911. The cubic root of 9970001990 is about 2152.2782405066.

The spelling of 9970001990 in words is "nine billion, nine hundred seventy million, one thousand, nine hundred ninety".