139013406 has 24 divisors (see below), whose sum is σ = 344223984. Its totient is φ = 39718080.

The previous prime is 139013353. The next prime is 139013417. The reversal of 139013406 is 604310931.

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 139013406.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 551515 + ... + 551766.

It is an arithmetic number, because the mean of its divisors is an integer number (14342666).

Almost surely, 2^139013406 is an apocalyptic number.

139013406 is an abundant number, since it is smaller than the sum of its proper divisors (205210578).

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

139013406 is a wasteful number, since it uses less digits than its factorization.

139013406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1103296 (or 1103293 counting only the distinct ones).

The product of its (nonzero) digits is 1944, while the sum is 27.

The square root of 139013406 is about 11790.3946498834. The cubic root of 139013406 is about 518.0267995457.

The spelling of 139013406 in words is "one hundred thirty-nine million, thirteen thousand, four hundred six".