139552947 has 12 divisors (see below), whose sum is σ = 204129120. Its totient is φ = 91857168.

The previous prime is 139552927. The next prime is 139552951. The reversal of 139552947 is 749255931.

It is a happy number.

139552947 is a `hidden beast` number, since 1 + 3 + 9 + 552 + 94 + 7 = 666.

It is not a de Polignac number, because 139552947 - 2⁶ = 139552883 is a prime.

It is not an unprimeable number, because it can be changed into a prime (139552927) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 97428 + ... + 98849.

It is an arithmetic number, because the mean of its divisors is an integer number (17010760).

Almost surely, 2^139552947 is an apocalyptic number.

139552947 is a deficient number, since it is larger than the sum of its proper divisors (64576173).

139552947 is a wasteful number, since it uses less digits than its factorization.

139552947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 196362 (or 196359 counting only the distinct ones).

The product of its digits is 340200, while the sum is 45.

The square root of 139552947 is about 11813.2530236172. The cubic root of 139552947 is about 518.6961255901.

The spelling of 139552947 in words is "one hundred thirty-nine million, five hundred fifty-two thousand, nine hundred forty-seven".