130679809 has 4 divisors (see below), whose sum is σ = 140732116. Its totient is φ = 120627504.

The previous prime is 130679807. The next prime is 130679827. The reversal of 130679809 is 908976031.

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

It can be written as a sum of positive squares in 2 ways, for example, as 8643600 + 122036209 = 2940^2 + 11047^2 .

It is a cyclic number.

It is not a de Polignac number, because 130679809 - 2¹ = 130679807 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130679803) 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, 5026134 + ... + 5026159.

It is an arithmetic number, because the mean of its divisors is an integer number (35183029).

Almost surely, 2^130679809 is an apocalyptic number.

It is an amenable number.

130679809 is a deficient number, since it is larger than the sum of its proper divisors (10052307).

130679809 is a wasteful number, since it uses less digits than its factorization.

130679809 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 10052306.

The product of its (nonzero) digits is 81648, while the sum is 43.

The square root of 130679809 is about 11431.5269758681. The cubic root of 130679809 is about 507.4611862540.

The spelling of 130679809 in words is "one hundred thirty million, six hundred seventy-nine thousand, eight hundred nine".