239390663 has 2 divisors, whose sum is σ = 239390664. Its totient is φ = 239390662.

The previous prime is 239390597. The next prime is 239390681. The reversal of 239390663 is 366093932.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 239390663 - 2¹⁰ = 239389639 is a prime.

It is a Sophie Germain prime.

It is a self number, because there is not a number n which added to its sum of digits gives 239390663.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (239350663) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 119695331 + 119695332.

It is an arithmetic number, because the mean of its divisors is an integer number (119695332).

Almost surely, 2^239390663 is an apocalyptic number.

239390663 is a deficient number, since it is larger than the sum of its proper divisors (1).

239390663 is an equidigital number, since it uses as much as digits as its factorization.

239390663 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 157464, while the sum is 41.

The square root of 239390663 is about 15472.2546191562. The cubic root of 239390663 is about 620.9201244287.

The spelling of 239390663 in words is "two hundred thirty-nine million, three hundred ninety thousand, six hundred sixty-three".