139423188 has 24 divisors (see below), whose sum is σ = 344457792. Its totient is φ = 43740544.

The previous prime is 139423187. The next prime is 139423199. The reversal of 139423188 is 881324931.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139423183) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 341520 + ... + 341927.

It is an arithmetic number, because the mean of its divisors is an integer number (14352408).

Almost surely, 2^139423188 is an apocalyptic number.

It is an amenable number.

139423188 is an abundant number, since it is smaller than the sum of its proper divisors (205034604).

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

139423188 is a wasteful number, since it uses less digits than its factorization.

139423188 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 683471 (or 683469 counting only the distinct ones).

The product of its digits is 41472, while the sum is 39.

The square root of 139423188 is about 11807.7596520254. The cubic root of 139423188 is about 518.5353112100.

The spelling of 139423188 in words is "one hundred thirty-nine million, four hundred twenty-three thousand, one hundred eighty-eight".