239615997 has 8 divisors (see below), whose sum is σ = 319953120. Its totient is φ = 159511440.

The previous prime is 239615993. The next prime is 239616017. The reversal of 239615997 is 799516932.

It is a happy number.

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

It is not a de Polignac number, because 239615997 - 2² = 239615993 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239615993) 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, 55722 + ... + 59867.

It is an arithmetic number, because the mean of its divisors is an integer number (39994140).

Almost surely, 2^239615997 is an apocalyptic number.

It is an amenable number.

239615997 is a deficient number, since it is larger than the sum of its proper divisors (80337123).

239615997 is a wasteful number, since it uses less digits than its factorization.

239615997 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 116283.

The product of its digits is 918540, while the sum is 51.

The square root of 239615997 is about 15479.5347798311. The cubic root of 239615997 is about 621.1148835404.

The spelling of 239615997 in words is "two hundred thirty-nine million, six hundred fifteen thousand, nine hundred ninety-seven".