979147547 has 6 divisors (see below), whose sum is σ = 1139008428. Its totient is φ = 839269284.

The previous prime is 979147541. The next prime is 979147549. The reversal of 979147547 is 745741979.

It is a happy number.

It is not a de Polignac number, because 979147547 - 2⁸ = 979147291 is a prime.

It is a super-2 number, since 2×979147547² = 1917459837592234418, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (979147541) 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 5 ways as a sum of consecutive naturals, for example, 9991253 + ... + 9991350.

It is an arithmetic number, because the mean of its divisors is an integer number (189834738).

Almost surely, 2^979147547 is an apocalyptic number.

979147547 is a deficient number, since it is larger than the sum of its proper divisors (159860881).

979147547 is a wasteful number, since it uses less digits than its factorization.

979147547 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 19982617 (or 19982610 counting only the distinct ones).

The product of its digits is 2222640, while the sum is 53.

The square root of 979147547 is about 31291.3334167785. Note that the first 3 decimals coincide. The cubic root of 979147547 is about 993.0003008639. Note that the first 3 decimals are identical.

The spelling of 979147547 in words is "nine hundred seventy-nine million, one hundred forty-seven thousand, five hundred forty-seven".