139872858 has 16 divisors (see below), whose sum is σ = 289392480. Its totient is φ = 45016496.

The previous prime is 139872841. The next prime is 139872877. The reversal of 139872858 is 858278931.

It is a self number, because there is not a number n which added to its sum of digits gives 139872858.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 401760 + ... + 402107.

It is an arithmetic number, because the mean of its divisors is an integer number (18087030).

Almost surely, 2^139872858 is an apocalyptic number.

139872858 is an abundant number, since it is smaller than the sum of its proper divisors (149519622).

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

139872858 is a wasteful number, since it uses less digits than its factorization.

139872858 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 803901.

The product of its digits is 967680, while the sum is 51.

The square root of 139872858 is about 11826.7856157115. The cubic root of 139872858 is about 519.0921758908.

The spelling of 139872858 in words is "one hundred thirty-nine million, eight hundred seventy-two thousand, eight hundred fifty-eight".