139050647 has 8 divisors (see below), whose sum is σ = 140944944. Its totient is φ = 137161728.

The previous prime is 139050631. The next prime is 139050671. The reversal of 139050647 is 746050931.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 139050647 - 2⁴ = 139050631 is a prime.

It is a super-2 number, since 2×139050647² = 38670164862237218, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (139050697) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 94973 + ... + 96425.

It is an arithmetic number, because the mean of its divisors is an integer number (17618118).

Almost surely, 2^139050647 is an apocalyptic number.

139050647 is a deficient number, since it is larger than the sum of its proper divisors (1894297).

139050647 is a wasteful number, since it uses less digits than its factorization.

139050647 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2689.

The product of its (nonzero) digits is 22680, while the sum is 35.

The square root of 139050647 is about 11791.9738381664. The cubic root of 139050647 is about 518.0730543497.

The spelling of 139050647 in words is "one hundred thirty-nine million, fifty thousand, six hundred forty-seven".