568912139 has 4 divisors (see below), whose sum is σ = 571354056. Its totient is φ = 566470224.

The previous prime is 568912133. The next prime is 568912147. The reversal of 568912139 is 931219865.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 931219865 = 5 ⋅186243973.

It is a cyclic number.

It is not a de Polignac number, because 568912139 - 2⁸ = 568911883 is a prime.

It is a super-2 number, since 2×568912139² = 647322043803110642, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 568912139.

It is not an unprimeable number, because it can be changed into a prime (568912133) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1220609 + ... + 1221074.

It is an arithmetic number, because the mean of its divisors is an integer number (142838514).

Almost surely, 2^568912139 is an apocalyptic number.

568912139 is a deficient number, since it is larger than the sum of its proper divisors (2441917).

568912139 is a wasteful number, since it uses less digits than its factorization.

568912139 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2441916.

The product of its digits is 116640, while the sum is 44.

The square root of 568912139 is about 23851.8791502892. The cubic root of 568912139 is about 828.6066228143.

The spelling of 568912139 in words is "five hundred sixty-eight million, nine hundred twelve thousand, one hundred thirty-nine".