979503840 has 576 divisors, whose sum is σ = 4094737920. Its totient is φ = 216483840.

The previous prime is 979503823. The next prime is 979503851. The reversal of 979503840 is 48305979.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 16057410 + ... + 16057470.

It is an arithmetic number, because the mean of its divisors is an integer number (7108920).

Almost surely, 2^979503840 is an apocalyptic number.

979503840 is a gapful number since it is divisible by the number (90) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 979503840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (2047368960).

979503840 is an abundant number, since it is smaller than the sum of its proper divisors (3115234080).

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

979503840 is a wasteful number, since it uses less digits than its factorization.

979503840 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 157 (or 137 counting only the distinct ones).

The product of its (nonzero) digits is 272160, while the sum is 45.

The square root of 979503840 is about 31297.0260567997. The cubic root of 979503840 is about 993.1207308415.

The spelling of 979503840 in words is "nine hundred seventy-nine million, five hundred three thousand, eight hundred forty".