979155072 has 384 divisors, whose sum is σ = 3436992000. Its totient is φ = 261660672.

The previous prime is 979155053. The next prime is 979155097. The reversal of 979155072 is 270551979.

979155072 is a `hidden beast` number, since 9 + 7 + 91 + 550 + 7 + 2 = 666.

It is a tau number, because it is divible by the number of its divisors (384).

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 47 ways as a sum of consecutive naturals, for example, 12394329 + ... + 12394407.

It is an arithmetic number, because the mean of its divisors is an integer number (8950500).

Almost surely, 2^979155072 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 979155072, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (1718496000).

979155072 is an abundant number, since it is smaller than the sum of its proper divisors (2457836928).

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

979155072 is a wasteful number, since it uses less digits than its factorization.

979155072 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 188 (or 173 counting only the distinct ones).

The product of its (nonzero) digits is 198450, while the sum is 45.

The square root of 979155072 is about 31291.4536575085. The cubic root of 979155072 is about 993.0028446781.

The spelling of 979155072 in words is "nine hundred seventy-nine million, one hundred fifty-five thousand, seventy-two".