130765439 has 4 divisors (see below), whose sum is σ = 149446224. Its totient is φ = 112084656.

The previous prime is 130765399. The next prime is 130765463. The reversal of 130765439 is 934567031.

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 130765439 - 2²⁰ = 129716863 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (130765499) 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, 9340382 + ... + 9340395.

It is an arithmetic number, because the mean of its divisors is an integer number (37361556).

Almost surely, 2^130765439 is an apocalyptic number.

130765439 is a deficient number, since it is larger than the sum of its proper divisors (18680785).

130765439 is an equidigital number, since it uses as much as digits as its factorization.

130765439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18680784.

The product of its (nonzero) digits is 68040, while the sum is 38.

The square root of 130765439 is about 11435.2717064353. The cubic root of 130765439 is about 507.5720026938.

The spelling of 130765439 in words is "one hundred thirty million, seven hundred sixty-five thousand, four hundred thirty-nine".