139327389 has 12 divisors (see below), whose sum is σ = 206159772. Its totient is φ = 90619200.

The previous prime is 139327381. The next prime is 139327403. The reversal of 139327389 is 983723931.

It can be written as a sum of positive squares in 2 ways, for example, as 1734489 + 137592900 = 1317^2 + 11730^2 .

It is not a de Polignac number, because 139327389 - 2³ = 139327381 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139327381) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 188422 + ... + 189159.

It is an arithmetic number, because the mean of its divisors is an integer number (17179981).

Almost surely, 2^139327389 is an apocalyptic number.

It is an amenable number.

139327389 is a deficient number, since it is larger than the sum of its proper divisors (66832383).

139327389 is a wasteful number, since it uses less digits than its factorization.

139327389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 377628 (or 377625 counting only the distinct ones).

The product of its digits is 244944, while the sum is 45.

The square root of 139327389 is about 11803.7023429092. The cubic root of 139327389 is about 518.4165204819.

It can be divided in two parts, 13932 and 7389, that added together give a triangular number (21321 = T₂₀₆).

The spelling of 139327389 in words is "one hundred thirty-nine million, three hundred twenty-seven thousand, three hundred eighty-nine".