130879979 has 4 divisors (see below), whose sum is σ = 131005560. Its totient is φ = 130754400.

The previous prime is 130879963. The next prime is 130879981. The reversal of 130879979 is 979978031.

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 130879979 - 2⁴ = 130879963 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 130879979.

It is not an unprimeable number, because it can be changed into a prime (130879919) 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, 61214 + ... + 63315.

It is an arithmetic number, because the mean of its divisors is an integer number (32751390).

Almost surely, 2^130879979 is an apocalyptic number.

130879979 is a deficient number, since it is larger than the sum of its proper divisors (125581).

130879979 is a wasteful number, since it uses less digits than its factorization.

130879979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 125580.

The product of its (nonzero) digits is 857304, while the sum is 53.

The square root of 130879979 is about 11440.2787990503. The cubic root of 130879979 is about 507.7201568527.

The spelling of 130879979 in words is "one hundred thirty million, eight hundred seventy-nine thousand, nine hundred seventy-nine".