139432684 has 6 divisors (see below), whose sum is σ = 244007204. Its totient is φ = 69716340.

The previous prime is 139432679. The next prime is 139432721. The reversal of 139432684 is 486234931.

It is a happy number.

139432684 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17429082 + ... + 17429089.

Almost surely, 2^139432684 is an apocalyptic number.

It is an amenable number.

139432684 is a deficient number, since it is larger than the sum of its proper divisors (104574520).

139432684 is a wasteful number, since it uses less digits than its factorization.

139432684 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34858175 (or 34858173 counting only the distinct ones).

The product of its digits is 124416, while the sum is 40.

The square root of 139432684 is about 11808.1617536346. The cubic root of 139432684 is about 518.5470832822.

The spelling of 139432684 in words is "one hundred thirty-nine million, four hundred thirty-two thousand, six hundred eighty-four".