253790389 has 2 divisors, whose sum is σ = 253790390. Its totient is φ = 253790388.

The previous prime is 253790387. The next prime is 253790419. The reversal of 253790389 is 983097352.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 162435025 + 91355364 = 12745^2 + 9558^2 .

It is a cyclic number.

It is not a de Polignac number, because 253790389 - 2¹ = 253790387 is a prime.

Together with 253790387, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253790387) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126895194 + 126895195.

It is an arithmetic number, because the mean of its divisors is an integer number (126895195).

Almost surely, 2^253790389 is an apocalyptic number.

It is an amenable number.

253790389 is a deficient number, since it is larger than the sum of its proper divisors (1).

253790389 is an equidigital number, since it uses as much as digits as its factorization.

253790389 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 408240, while the sum is 46.

The square root of 253790389 is about 15930.8000112989. The cubic root of 253790389 is about 633.1282962934.

The spelling of 253790389 in words is "two hundred fifty-three million, seven hundred ninety thousand, three hundred eighty-nine".