139684464 has 30 divisors (see below), whose sum is σ = 390922896. Its totient is φ = 46561440.

The previous prime is 139684439. The next prime is 139684471. The reversal of 139684464 is 464486931.

It is a nude number because it is divisible by every one of its digits.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 484872 + ... + 485159.

Almost surely, 2^139684464 is an apocalyptic number.

It is an amenable number.

139684464 is an abundant number, since it is smaller than the sum of its proper divisors (251238432).

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

139684464 is a wasteful number, since it uses less digits than its factorization.

139684464 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 970045 (or 970036 counting only the distinct ones).

The product of its digits is 497664, while the sum is 45.

The square root of 139684464 is about 11818.8182150332. The cubic root of 139684464 is about 518.8590170262.

The spelling of 139684464 in words is "one hundred thirty-nine million, six hundred eighty-four thousand, four hundred sixty-four".