979649880 has 384 divisors, whose sum is σ = 3516307200. Its totient is φ = 217451520.

The previous prime is 979649843. The next prime is 979649893. The reversal of 979649880 is 88946979.

It is a Harshad number since it is a multiple of its sum of digits (60).

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 14621607 + ... + 14621673.

It is an arithmetic number, because the mean of its divisors is an integer number (9157050).

Almost surely, 2^979649880 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 979649880, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1758153600).

979649880 is an abundant number, since it is smaller than the sum of its proper divisors (2536657320).

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

979649880 is a wasteful number, since it uses less digits than its factorization.

979649880 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 175 (or 160 counting only the distinct ones).

The product of its (nonzero) digits is 7838208, while the sum is 60.

The square root of 979649880 is about 31299.3590988697. The cubic root of 979649880 is about 993.1700851296.

The spelling of 979649880 in words is "nine hundred seventy-nine million, six hundred forty-nine thousand, eight hundred eighty".