139000389 has 16 divisors (see below), whose sum is σ = 202391040. Its totient is φ = 84155760.

The previous prime is 139000343. The next prime is 139000391. The reversal of 139000389 is 983000931.

It is a de Polignac number, because none of the positive numbers 2^k-139000389 is a prime.

It is a super-2 number, since 2×139000389² = 38642216284302642, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139000319) 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, 46704 + ... + 49590.

It is an arithmetic number, because the mean of its divisors is an integer number (12649440).

Almost surely, 2^139000389 is an apocalyptic number.

It is an amenable number.

139000389 is a deficient number, since it is larger than the sum of its proper divisors (63390651).

139000389 is a wasteful number, since it uses less digits than its factorization.

139000389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4360.

The product of its (nonzero) digits is 5832, while the sum is 33.

The square root of 139000389 is about 11789.8426198147. The cubic root of 139000389 is about 518.0106299653.

The spelling of 139000389 in words is "one hundred thirty-nine million, three hundred eighty-nine", and thus it is an aban number.