139379444 has 12 divisors (see below), whose sum is σ = 250506564. Its totient is φ = 67806144.

The previous prime is 139379437. The next prime is 139379467. The reversal of 139379444 is 444973931.

It can be written as a sum of positive squares in 2 ways, for example, as 119683600 + 19695844 = 10940^2 + 4438^2 .

It is a junction number, because it is equal to n+sod(n) for n = 139379395 and 139379404.

It is a congruent number.

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, 470729 + ... + 471024.

It is an arithmetic number, because the mean of its divisors is an integer number (20875547).

Almost surely, 2^139379444 is an apocalyptic number.

It is an amenable number.

139379444 is a deficient number, since it is larger than the sum of its proper divisors (111127120).

139379444 is a wasteful number, since it uses less digits than its factorization.

139379444 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 941794 (or 941792 counting only the distinct ones).

The product of its digits is 326592, while the sum is 44.

The square root of 139379444 is about 11805.9071654829. The cubic root of 139379444 is about 518.4810754174.

The spelling of 139379444 in words is "one hundred thirty-nine million, three hundred seventy-nine thousand, four hundred forty-four".