159700979 has 4 divisors (see below), whose sum is σ = 161114376. Its totient is φ = 158287584.

The previous prime is 159700973. The next prime is 159700987. The reversal of 159700979 is 979007951.

It is a happy number.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 159700979 - 2⁴ = 159700963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (159700973) 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, 706529 + ... + 706754.

It is an arithmetic number, because the mean of its divisors is an integer number (40278594).

Almost surely, 2^159700979 is an apocalyptic number.

159700979 is a deficient number, since it is larger than the sum of its proper divisors (1413397).

159700979 is a wasteful number, since it uses less digits than its factorization.

159700979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1413396.

The product of its (nonzero) digits is 178605, while the sum is 47.

The square root of 159700979 is about 12637.2852701836. The cubic root of 159700979 is about 542.5451174720.

The spelling of 159700979 in words is "one hundred fifty-nine million, seven hundred thousand, nine hundred seventy-nine".