253940919 has 4 divisors (see below), whose sum is σ = 338587896. Its totient is φ = 169293944.

The previous prime is 253940903. The next prime is 253940923. The reversal of 253940919 is 919049352.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 253940919 - 2⁴ = 253940903 is a prime.

It is a super-2 number, since 2×253940919² = 128971980685129122, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253940959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 42323484 + ... + 42323489.

It is an arithmetic number, because the mean of its divisors is an integer number (84646974).

Almost surely, 2^253940919 is an apocalyptic number.

253940919 is a deficient number, since it is larger than the sum of its proper divisors (84646977).

253940919 is an equidigital number, since it uses as much as digits as its factorization.

253940919 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84646976.

The product of its (nonzero) digits is 87480, while the sum is 42.

The square root of 253940919 is about 15935.5238068913. The cubic root of 253940919 is about 633.2534467721.

The spelling of 253940919 in words is "two hundred fifty-three million, nine hundred forty thousand, nine hundred nineteen".