239259797 has 12 divisors (see below), whose sum is σ = 285847020. Its totient is φ = 199535616.

The previous prime is 239259749. The next prime is 239259817. The reversal of 239259797 is 797952932.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 118940836 + 120318961 = 10906^2 + 10969^2 .

It is not a de Polignac number, because 239259797 - 2¹² = 239255701 is a prime.

It is a Smith number, since the sum of its digits (53) coincides with the sum of the digits of its prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (239259707) 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, 64172 + ... + 67797.

It is an arithmetic number, because the mean of its divisors is an integer number (23820585).

Almost surely, 2^239259797 is an apocalyptic number.

It is an amenable number.

239259797 is a deficient number, since it is larger than the sum of its proper divisors (46587223).

239259797 is a wasteful number, since it uses less digits than its factorization.

239259797 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132020 (or 132013 counting only the distinct ones).

The product of its digits is 2143260, while the sum is 53.

The square root of 239259797 is about 15468.0249870499. The cubic root of 239259797 is about 620.8069591346.

The spelling of 239259797 in words is "two hundred thirty-nine million, two hundred fifty-nine thousand, seven hundred ninety-seven".