139385958 has 16 divisors (see below), whose sum is σ = 295170480. Its totient is φ = 43728896.

The previous prime is 139385947. The next prime is 139385969. The reversal of 139385958 is 859583931.

139385958 is digitally balanced in base 2 and base 3, because in such bases it contains all the possibile digits an equal number of times.

It is an interprime number because it is at equal distance from previous prime (139385947) and next prime (139385969).

It is a Harshad number since it is a multiple of its sum of digits (51).

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 139385958.

It is a congruent number.

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, 683163 + ... + 683366.

It is an arithmetic number, because the mean of its divisors is an integer number (18448155).

Almost surely, 2^139385958 is an apocalyptic number.

139385958 is an abundant number, since it is smaller than the sum of its proper divisors (155784522).

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

139385958 is a wasteful number, since it uses less digits than its factorization.

139385958 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1366551.

The product of its digits is 1166400, while the sum is 51.

The square root of 139385958 is about 11806.1830411018. The cubic root of 139385958 is about 518.4891524887.

The spelling of 139385958 in words is "one hundred thirty-nine million, three hundred eighty-five thousand, nine hundred fifty-eight".