245465239 has 2 divisors, whose sum is σ = 245465240. Its totient is φ = 245465238.

The previous prime is 245465197. The next prime is 245465273. The reversal of 245465239 is 932564542.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 245465239 - 2⁷ = 245465111 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245465299) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122732619 + 122732620.

It is an arithmetic number, because the mean of its divisors is an integer number (122732620).

Almost surely, 2^245465239 is an apocalyptic number.

245465239 is a deficient number, since it is larger than the sum of its proper divisors (1).

245465239 is an equidigital number, since it uses as much as digits as its factorization.

245465239 is an evil number, because the sum of its binary digits is even.

The product of its digits is 259200, while the sum is 40.

The square root of 245465239 is about 15667.3303086391. The cubic root of 245465239 is about 626.1282991599.

The spelling of 245465239 in words is "two hundred forty-five million, four hundred sixty-five thousand, two hundred thirty-nine".