245304239 has 2 divisors, whose sum is σ = 245304240. Its totient is φ = 245304238.

The previous prime is 245304229. The next prime is 245304247. The reversal of 245304239 is 932403542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245304239 - 2⁸ = 245303983 is a prime.

It is a Sophie Germain prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245304229) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122652119 + 122652120.

It is an arithmetic number, because the mean of its divisors is an integer number (122652120).

Almost surely, 2^245304239 is an apocalyptic number.

245304239 is a deficient number, since it is larger than the sum of its proper divisors (1).

245304239 is an equidigital number, since it uses as much as digits as its factorization.

245304239 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 32.

The square root of 245304239 is about 15662.1913856267. The cubic root of 245304239 is about 625.9913772557.

The spelling of 245304239 in words is "two hundred forty-five million, three hundred four thousand, two hundred thirty-nine".