990026934388 has 12 divisors (see below), whose sum is σ = 1761912341280. Its totient is φ = 486623408312.

The previous prime is 990026934367. The next prime is 990026934431. The reversal of 990026934388 is 883439620099.

It is a congruent number.

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, 2097514456 + ... + 2097514927.

It is an arithmetic number, because the mean of its divisors is an integer number (146826028440).

Almost surely, 2^990026934388 is an apocalyptic number.

It is an amenable number.

990026934388 is a deficient number, since it is larger than the sum of its proper divisors (771885406892).

990026934388 is a wasteful number, since it uses less digits than its factorization.

990026934388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4195029446 (or 4195029444 counting only the distinct ones).

The product of its (nonzero) digits is 20155392, while the sum is 61.

The spelling of 990026934388 in words is "nine hundred ninety billion, twenty-six million, nine hundred thirty-four thousand, three hundred eighty-eight".