130990809 has 4 divisors (see below), whose sum is σ = 174654416. Its totient is φ = 87327204.

The previous prime is 130990801. The next prime is 130990861. The reversal of 130990809 is 908099031.

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.

It is not a de Polignac number, because 130990809 - 2³ = 130990801 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (130990801) 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, 21831799 + ... + 21831804.

It is an arithmetic number, because the mean of its divisors is an integer number (43663604).

Almost surely, 2^130990809 is an apocalyptic number.

It is an amenable number.

130990809 is a deficient number, since it is larger than the sum of its proper divisors (43663607).

130990809 is an equidigital number, since it uses as much as digits as its factorization.

130990809 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 43663606.

The product of its (nonzero) digits is 17496, while the sum is 39.

The square root of 130990809 is about 11445.1216245176. The cubic root of 130990809 is about 507.8634299733.

The spelling of 130990809 in words is "one hundred thirty million, nine hundred ninety thousand, eight hundred nine".