245793239 has 2 divisors, whose sum is σ = 245793240. Its totient is φ = 245793238.

The previous prime is 245793227. The next prime is 245793269. The reversal of 245793239 is 932397542.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-245793239 is a prime.

It is a super-2 number, since 2×245793239² = 120828632676222242, which contains 22 as substring.

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 245793239.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (245793209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122896619 + 122896620.

It is an arithmetic number, because the mean of its divisors is an integer number (122896620).

Almost surely, 2^245793239 is an apocalyptic number.

245793239 is a deficient number, since it is larger than the sum of its proper divisors (1).

245793239 is an equidigital number, since it uses as much as digits as its factorization.

245793239 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 408240, while the sum is 44.

The square root of 245793239 is about 15677.7944558538. The cubic root of 245793239 is about 626.4070605253.

The spelling of 245793239 in words is "two hundred forty-five million, seven hundred ninety-three thousand, two hundred thirty-nine".