979557 has 8 divisors (see below), whose sum is σ = 1382976. Its totient is φ = 614592.

The previous prime is 979553. The next prime is 979567. The reversal of 979557 is 755979.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 979557 - 2² = 979553 is a prime.

979557 is a lucky number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 979557.

It is not an unprimeable number, because it can be changed into a prime (979553) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9553 + ... + 9654.

It is an arithmetic number, because the mean of its divisors is an integer number (172872).

2⁹⁷⁹⁵⁵⁷ is an apocalyptic number.

It is an amenable number.

979557 is a deficient number, since it is larger than the sum of its proper divisors (403419).

979557 is a wasteful number, since it uses less digits than its factorization.

979557 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19227.

The product of its digits is 99225, while the sum is 42.

The square root of 979557 is about 989.7257195809. The cubic root of 979557 is about 99.3138696857.

The spelling of 979557 in words is "nine hundred seventy-nine thousand, five hundred fifty-seven".