139398339 has 4 divisors (see below), whose sum is σ = 185864456. Its totient is φ = 92932224.

The previous prime is 139398323. The next prime is 139398341. The reversal of 139398339 is 933893931.

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

It is not a de Polignac number, because 139398339 - 2⁴ = 139398323 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (139398379) 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, 23233054 + ... + 23233059.

It is an arithmetic number, because the mean of its divisors is an integer number (46466114).

Almost surely, 2^139398339 is an apocalyptic number.

139398339 is a deficient number, since it is larger than the sum of its proper divisors (46466117).

139398339 is an equidigital number, since it uses as much as digits as its factorization.

139398339 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 46466116.

The product of its digits is 472392, while the sum is 48.

The square root of 139398339 is about 11806.7073733535. The cubic root of 139398339 is about 518.5045036863.

The spelling of 139398339 in words is "one hundred thirty-nine million, three hundred ninety-eight thousand, three hundred thirty-nine".