979999776 has 192 divisors, whose sum is σ = 3372687360. Its totient is φ = 270915840.

The previous prime is 979999759. The next prime is 979999789. The reversal of 979999776 is 677999979.

It is a Harshad number since it is a multiple of its sum of digits (72).

It is a nude number because it is divisible by every one of its digits.

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 31 ways as a sum of consecutive naturals, for example, 184875 + ... + 190101.

It is an arithmetic number, because the mean of its divisors is an integer number (17566080).

Almost surely, 2^979999776 is an apocalyptic number.

979999776 is a gapful number since it is divisible by the number (96) 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 979999776, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1686343680).

979999776 is an abundant number, since it is smaller than the sum of its proper divisors (2392687584).

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

979999776 is a wasteful number, since it uses less digits than its factorization.

979999776 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5284 (or 5270 counting only the distinct ones).

The product of its digits is 121522842, while the sum is 72.

The square root of 979999776 is about 31304.9481072881. The cubic root of 979999776 is about 993.2883127001.

The spelling of 979999776 in words is "nine hundred seventy-nine million, nine hundred ninety-nine thousand, seven hundred seventy-six".