139319394 has 32 divisors (see below), whose sum is σ = 294658560. Its totient is φ = 43843200.

The previous prime is 139319387. The next prime is 139319399. The reversal of 139319394 is 493913931.

It is not an unprimeable number, because it can be changed into a prime (139319399) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1509 + ... + 16760.

It is an arithmetic number, because the mean of its divisors is an integer number (9208080).

Almost surely, 2^139319394 is an apocalyptic number.

139319394 is an abundant number, since it is smaller than the sum of its proper divisors (155339166).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

139319394 is a wasteful number, since it uses less digits than its factorization.

139319394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 18346.

The product of its digits is 78732, while the sum is 42.

The square root of 139319394 is about 11803.3636731230. The cubic root of 139319394 is about 518.4066042230.

The spelling of 139319394 in words is "one hundred thirty-nine million, three hundred nineteen thousand, three hundred ninety-four".