979157 has 4 divisors (see below), whose sum is σ = 988416. Its totient is φ = 969900.

The previous prime is 979117. The next prime is 979159. The reversal of 979157 is 751979.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 751979 = 179 ⋅4201.

It is a cyclic number.

It is not a de Polignac number, because 979157 - 2⁶ = 979093 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 979157.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (979159) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4469 + ... + 4682.

It is an arithmetic number, because the mean of its divisors is an integer number (247104).

2⁹⁷⁹¹⁵⁷ is an apocalyptic number.

It is an amenable number.

979157 is a deficient number, since it is larger than the sum of its proper divisors (9259).

979157 is a wasteful number, since it uses less digits than its factorization.

979157 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9258.

The product of its digits is 19845, while the sum is 38.

The square root of 979157 is about 989.5236227600. The cubic root of 979157 is about 99.3003496433.

The spelling of 979157 in words is "nine hundred seventy-nine thousand, one hundred fifty-seven".