979230157 has 2 divisors, whose sum is σ = 979230158. Its totient is φ = 979230156.

The previous prime is 979230149. The next prime is 979230181. The reversal of 979230157 is 751032979.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 564252516 + 414977641 = 23754^2 + 20371^2 .

It is a cyclic number.

It is not a de Polignac number, because 979230157 - 2³ = 979230149 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (979230127) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 489615078 + 489615079.

It is an arithmetic number, because the mean of its divisors is an integer number (489615079).

Almost surely, 2^979230157 is an apocalyptic number.

It is an amenable number.

979230157 is a deficient number, since it is larger than the sum of its proper divisors (1).

979230157 is an equidigital number, since it uses as much as digits as its factorization.

979230157 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 119070, while the sum is 43.

The square root of 979230157 is about 31292.6534029954. The cubic root of 979230157 is about 993.0282263277.

The spelling of 979230157 in words is "nine hundred seventy-nine million, two hundred thirty thousand, one hundred fifty-seven".