979891902 has 72 divisors (see below), whose sum is σ = 2444602680. Its totient is φ = 281288160.

The previous prime is 979891901. The next prime is 979891909. The reversal of 979891902 is 209198979.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979891901) by changing a digit.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 64624 + ... + 78332.

It is an arithmetic number, because the mean of its divisors is an integer number (33952815).

Almost surely, 2^979891902 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 979891902, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1222301340).

979891902 is an abundant number, since it is smaller than the sum of its proper divisors (1464710778).

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

979891902 is a wasteful number, since it uses less digits than its factorization.

979891902 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13766 (or 13744 counting only the distinct ones).

The product of its (nonzero) digits is 734832, while the sum is 54.

The square root of 979891902 is about 31303.2251054105. The cubic root of 979891902 is about 993.2518657819.

The spelling of 979891902 in words is "nine hundred seventy-nine million, eight hundred ninety-one thousand, nine hundred two".