139385544 has 16 divisors (see below), whose sum is σ = 348463920. Its totient is φ = 46461840.

The previous prime is 139385537. The next prime is 139385551. The reversal of 139385544 is 445583931.

It is an interprime number because it is at equal distance from previous prime (139385537) and next prime (139385551).

It is a junction number, because it is equal to n+sod(n) for n = 139385496 and 139385505.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 2903842 + ... + 2903889.

It is an arithmetic number, because the mean of its divisors is an integer number (21778995).

Almost surely, 2^139385544 is an apocalyptic number.

It is an amenable number.

139385544 is an abundant number, since it is smaller than the sum of its proper divisors (209078376).

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

139385544 is a wasteful number, since it uses less digits than its factorization.

139385544 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5807740 (or 5807736 counting only the distinct ones).

The product of its digits is 259200, while the sum is 42.

The square root of 139385544 is about 11806.1655079031. The cubic root of 139385544 is about 518.4886391545.

The spelling of 139385544 in words is "one hundred thirty-nine million, three hundred eighty-five thousand, five hundred forty-four".