523970239 has 8 divisors (see below), whose sum is σ = 593974640. Its totient is φ = 458208576.

The previous prime is 523970233. The next prime is 523970261. The reversal of 523970239 is 932079325.

It is a happy number.

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 523970239 - 2²³ = 515581631 is a prime.

It is a super-2 number, since 2×523970239² = 549089622715434242, 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 (523970233) 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, 1060422 + ... + 1060915.

It is an arithmetic number, because the mean of its divisors is an integer number (74246830).

Almost surely, 2^523970239 is an apocalyptic number.

523970239 is a deficient number, since it is larger than the sum of its proper divisors (70004401).

523970239 is a wasteful number, since it uses less digits than its factorization.

523970239 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2121369.

The product of its (nonzero) digits is 102060, while the sum is 40.

The square root of 523970239 is about 22890.3962176280. The cubic root of 523970239 is about 806.1865346434.

The spelling of 523970239 in words is "five hundred twenty-three million, nine hundred seventy thousand, two hundred thirty-nine".