139139692 has 6 divisors (see below), whose sum is σ = 243494468. Its totient is φ = 69569844.

The previous prime is 139139677. The next prime is 139139711. The reversal of 139139692 is 296931931.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17392458 + ... + 17392465.

Almost surely, 2^139139692 is an apocalyptic number.

It is an amenable number.

139139692 is a deficient number, since it is larger than the sum of its proper divisors (104354776).

139139692 is a wasteful number, since it uses less digits than its factorization.

139139692 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34784927 (or 34784925 counting only the distinct ones).

The product of its digits is 78732, while the sum is 43.

The square root of 139139692 is about 11795.7488952588. The cubic root of 139139692 is about 518.1836183117.

The spelling of 139139692 in words is "one hundred thirty-nine million, one hundred thirty-nine thousand, six hundred ninety-two".