1372317139 has 4 divisors (see below), whose sum is σ = 1401515424. Its totient is φ = 1343118856.

The previous prime is 1372317131. The next prime is 1372317151. The reversal of 1372317139 is 9317132731.

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 1372317139 - 2³ = 1372317131 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 1372317098 and 1372317107.

It is not an unprimeable number, because it can be changed into a prime (1372317131) 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, 14599072 + ... + 14599165.

It is an arithmetic number, because the mean of its divisors is an integer number (350378856).

Almost surely, 2^1372317139 is an apocalyptic number.

1372317139 is a deficient number, since it is larger than the sum of its proper divisors (29198285).

1372317139 is an equidigital number, since it uses as much as digits as its factorization.

1372317139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29198284.

The product of its digits is 23814, while the sum is 37.

The square root of 1372317139 is about 37044.7990816525. The cubic root of 1372317139 is about 1111.2663465815.

The spelling of 1372317139 in words is "one billion, three hundred seventy-two million, three hundred seventeen thousand, one hundred thirty-nine".