239225857 has 8 divisors (see below), whose sum is σ = 263912040. Its totient is φ = 215437440.

The previous prime is 239225851. The next prime is 239225869. The reversal of 239225857 is 758522932.

It can be written as a sum of positive squares in 4 ways, for example, as 3326976 + 235898881 = 1824^2 + 15359^2 .

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 239225857 - 2³ = 239225849 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (239225851) 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, 223882 + ... + 224947.

It is an arithmetic number, because the mean of its divisors is an integer number (32989005).

Almost surely, 2^239225857 is an apocalyptic number.

It is an amenable number.

239225857 is a deficient number, since it is larger than the sum of its proper divisors (24686183).

239225857 is a wasteful number, since it uses less digits than its factorization.

239225857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448883.

The product of its digits is 302400, while the sum is 43.

The square root of 239225857 is about 15466.9278462143. The cubic root of 239225857 is about 620.7776030611. Note that the first 3 decimals are identical.

The spelling of 239225857 in words is "two hundred thirty-nine million, two hundred twenty-five thousand, eight hundred fifty-seven".