239263261 has 2 divisors, whose sum is σ = 239263262. Its totient is φ = 239263260.

The previous prime is 239263237. The next prime is 239263279. The reversal of 239263261 is 162362932.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 230888025 + 8375236 = 15195^2 + 2894^2 .

It is a cyclic number.

It is not a de Polignac number, because 239263261 - 2¹³ = 239255069 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239263291) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119631630 + 119631631.

It is an arithmetic number, because the mean of its divisors is an integer number (119631631).

Almost surely, 2^239263261 is an apocalyptic number.

It is an amenable number.

239263261 is a deficient number, since it is larger than the sum of its proper divisors (1).

239263261 is an equidigital number, since it uses as much as digits as its factorization.

239263261 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 23328, while the sum is 34.

The square root of 239263261 is about 15468.1369595695. The cubic root of 239263261 is about 620.8099551317.

The spelling of 239263261 in words is "two hundred thirty-nine million, two hundred sixty-three thousand, two hundred sixty-one".