139875464 has 8 divisors (see below), whose sum is σ = 262266510. Its totient is φ = 69937728.

The previous prime is 139875457. The next prime is 139875479. The reversal of 139875464 is 464578931.

It can be written as a sum of positive squares in only one way, i.e., 90060100 + 49815364 = 9490^2 + 7058^2 .

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

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 8742209 + ... + 8742224.

Almost surely, 2^139875464 is an apocalyptic number.

It is an amenable number.

139875464 is a deficient number, since it is larger than the sum of its proper divisors (122391046).

139875464 is a wasteful number, since it uses less digits than its factorization.

139875464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17484439 (or 17484435 counting only the distinct ones).

The product of its digits is 725760, while the sum is 47.

The square root of 139875464 is about 11826.8957888366. The cubic root of 139875464 is about 519.0953996418.

The spelling of 139875464 in words is "one hundred thirty-nine million, eight hundred seventy-five thousand, four hundred sixty-four".