139817344 has 32 divisors (see below), whose sum is σ = 279176040. Its totient is φ = 69749760.

The previous prime is 139817341. The next prime is 139817351. The reversal of 139817344 is 443718931.

It is a tau number, because it is divible by the number of its divisors (32).

It is a junction number, because it is equal to n+sod(n) for n = 139817297 and 139817306.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139817341) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 72132 + ... + 74044.

Almost surely, 2^139817344 is an apocalyptic number.

It is an amenable number.

139817344 is a deficient number, since it is larger than the sum of its proper divisors (139358696).

139817344 is an equidigital number, since it uses as much as digits as its factorization.

139817344 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2498 (or 2486 counting only the distinct ones).

The product of its digits is 72576, while the sum is 40.

The square root of 139817344 is about 11824.4384221831. The cubic root of 139817344 is about 519.0234928103.

The spelling of 139817344 in words is "one hundred thirty-nine million, eight hundred seventeen thousand, three hundred forty-four".