253686379 has 2 divisors, whose sum is σ = 253686380. Its totient is φ = 253686378.

The previous prime is 253686313. The next prime is 253686383. The reversal of 253686379 is 973686352.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 253686379 - 2²⁷ = 119468651 is a prime.

It is not a weakly prime, because it can be changed into another prime (253686079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126843189 + 126843190.

It is an arithmetic number, because the mean of its divisors is an integer number (126843190).

Almost surely, 2^253686379 is an apocalyptic number.

253686379 is a deficient number, since it is larger than the sum of its proper divisors (1).

253686379 is an equidigital number, since it uses as much as digits as its factorization.

253686379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1632960, while the sum is 49.

The square root of 253686379 is about 15927.5352456053. The cubic root of 253686379 is about 633.0417935797.

The spelling of 253686379 in words is "two hundred fifty-three million, six hundred eighty-six thousand, three hundred seventy-nine".