139353944 has 8 divisors (see below), whose sum is σ = 261288660. Its totient is φ = 69676968.

The previous prime is 139353887. The next prime is 139353971. The reversal of 139353944 is 449353931.

139353944 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a tau number, because it is divible by the number of its divisors (8).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8709614 + ... + 8709629.

Almost surely, 2^139353944 is an apocalyptic number.

It is an amenable number.

139353944 is a deficient number, since it is larger than the sum of its proper divisors (121934716).

139353944 is a wasteful number, since it uses less digits than its factorization.

139353944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17419249 (or 17419245 counting only the distinct ones).

The product of its digits is 174960, while the sum is 41.

The square root of 139353944 is about 11804.8271482474. The cubic root of 139353944 is about 518.4494541266.

The spelling of 139353944 in words is "one hundred thirty-nine million, three hundred fifty-three thousand, nine hundred forty-four".