253443479 has 2 divisors, whose sum is σ = 253443480. Its totient is φ = 253443478.

The previous prime is 253443469. The next prime is 253443523. The reversal of 253443479 is 974344352.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 253443479 - 2²⁴ = 236666263 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (253443469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 126721739 + 126721740.

It is an arithmetic number, because the mean of its divisors is an integer number (126721740).

Almost surely, 2^253443479 is an apocalyptic number.

253443479 is a deficient number, since it is larger than the sum of its proper divisors (1).

253443479 is an equidigital number, since it uses as much as digits as its factorization.

253443479 is an evil number, because the sum of its binary digits is even.

The product of its digits is 362880, while the sum is 41.

The square root of 253443479 is about 15919.9082597859. The cubic root of 253443479 is about 632.8396871384.

The spelling of 253443479 in words is "two hundred fifty-three million, four hundred forty-three thousand, four hundred seventy-nine".