139130389 has 4 divisors (see below), whose sum is σ = 140064300. Its totient is φ = 138196480.

The previous prime is 139130377. The next prime is 139130401. The reversal of 139130389 is 983031931.

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

It is an interprime number because it is at equal distance from previous prime (139130377) and next prime (139130401).

It can be written as a sum of positive squares in 2 ways, for example, as 58400164 + 80730225 = 7642^2 + 8985^2 .

It is a cyclic number.

It is not a de Polignac number, because 139130389 - 2⁹ = 139129877 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 (139130359) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 466732 + ... + 467029.

It is an arithmetic number, because the mean of its divisors is an integer number (35016075).

Almost surely, 2^139130389 is an apocalyptic number.

It is an amenable number.

139130389 is a deficient number, since it is larger than the sum of its proper divisors (933911).

139130389 is an equidigital number, since it uses as much as digits as its factorization.

139130389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 933910.

The product of its (nonzero) digits is 17496, while the sum is 37.

The square root of 139130389 is about 11795.3545516869. The cubic root of 139130389 is about 518.1720693196.

The spelling of 139130389 in words is "one hundred thirty-nine million, one hundred thirty thousand, three hundred eighty-nine".