253288439 has 2 divisors, whose sum is σ = 253288440. Its totient is φ = 253288438.

The previous prime is 253288391. The next prime is 253288481. The reversal of 253288439 is 934882352.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-253288439 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253288439.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253288039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126644219 + 126644220.

It is an arithmetic number, because the mean of its divisors is an integer number (126644220).

Almost surely, 2^253288439 is an apocalyptic number.

253288439 is a deficient number, since it is larger than the sum of its proper divisors (1).

253288439 is an equidigital number, since it uses as much as digits as its factorization.

253288439 is an evil number, because the sum of its binary digits is even.

The product of its digits is 414720, while the sum is 44.

The square root of 253288439 is about 15915.0381400737. The cubic root of 253288439 is about 632.7106176260.

The spelling of 253288439 in words is "two hundred fifty-three million, two hundred eighty-eight thousand, four hundred thirty-nine".