979299972 has 72 divisors (see below), whose sum is σ = 2858326016. Its totient is φ = 276908544.

The previous prime is 979299953. The next prime is 979299973. The reversal of 979299972 is 279992979.

It is a Harshad number since it is a multiple of its sum of digits (63).

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

It is not an unprimeable number, because it can be changed into a prime (979299973) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 4413 + ... + 44475.

Almost surely, 2^979299972 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 979299972, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1429163008).

979299972 is an abundant number, since it is smaller than the sum of its proper divisors (1879026044).

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

979299972 is a wasteful number, since it uses less digits than its factorization.

979299972 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 40177 (or 40172 counting only the distinct ones).

The product of its digits is 11573604, while the sum is 63.

The square root of 979299972 is about 31293.7689005335. The cubic root of 979299972 is about 993.0518253483.

The spelling of 979299972 in words is "nine hundred seventy-nine million, two hundred ninety-nine thousand, nine hundred seventy-two".