139198830 has 32 divisors (see below), whose sum is σ = 335591424. Its totient is φ = 36951456.

The previous prime is 139198823. The next prime is 139198841. The reversal of 139198830 is 38891931.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3714 + ... + 17093.

It is an arithmetic number, because the mean of its divisors is an integer number (10487232).

Almost surely, 2^139198830 is an apocalyptic number.

139198830 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

139198830 is an abundant number, since it is smaller than the sum of its proper divisors (196392594).

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

139198830 is a wasteful number, since it uses less digits than its factorization.

139198830 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21040.

The product of its (nonzero) digits is 46656, while the sum is 42.

The square root of 139198830 is about 11798.2553795042. The cubic root of 139198830 is about 518.2570217666.

The spelling of 139198830 in words is "one hundred thirty-nine million, one hundred ninety-eight thousand, eight hundred thirty".