253942919 has 2 divisors, whose sum is σ = 253942920. Its totient is φ = 253942918.

The previous prime is 253942901. The next prime is 253942921. The reversal of 253942919 is 919249352.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253942919 - 2²⁴ = 237165703 is a prime.

It is a super-2 number, since 2×253942919² = 128974012220481122, which contains 22 as substring.

Together with 253942921, it forms a pair of twin primes.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253942919.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253945919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126971459 + 126971460.

It is an arithmetic number, because the mean of its divisors is an integer number (126971460).

Almost surely, 2^253942919 is an apocalyptic number.

253942919 is a deficient number, since it is larger than the sum of its proper divisors (1).

253942919 is an equidigital number, since it uses as much as digits as its factorization.

253942919 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 174960, while the sum is 44.

The square root of 253942919 is about 15935.5865596469. The cubic root of 253942919 is about 633.2551092369.

The spelling of 253942919 in words is "two hundred fifty-three million, nine hundred forty-two thousand, nine hundred nineteen".