239590081 has 2 divisors, whose sum is σ = 239590082. Its totient is φ = 239590080.

The previous prime is 239590037. The next prime is 239590093. The reversal of 239590081 is 180095932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 138768400 + 100821681 = 11780^2 + 10041^2 .

It is a cyclic number.

It is not a de Polignac number, because 239590081 - 2⁹ = 239589569 is a prime.

It is a super-2 number, since 2×239590081² = 114806813827173122, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 239590081.

It is not a weakly prime, because it can be changed into another prime (239590031) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119795040 + 119795041.

It is an arithmetic number, because the mean of its divisors is an integer number (119795041).

Almost surely, 2^239590081 is an apocalyptic number.

It is an amenable number.

239590081 is a deficient number, since it is larger than the sum of its proper divisors (1).

239590081 is an equidigital number, since it uses as much as digits as its factorization.

239590081 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 19440, while the sum is 37.

The square root of 239590081 is about 15478.6976519344. The cubic root of 239590081 is about 621.0924902196.

The spelling of 239590081 in words is "two hundred thirty-nine million, five hundred ninety thousand, eighty-one".