253947 has 4 divisors (see below), whose sum is σ = 338600. Its totient is φ = 169296.

The previous prime is 253937. The next prime is 253949. The reversal of 253947 is 749352.

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

It is not a de Polignac number, because 253947 - 2⁷ = 253819 is a prime.

It is a D-number.

It is a Duffinian number.

It is a congruent number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253947.

It is not an unprimeable number, because it can be changed into a prime (253949) 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, 42322 + ... + 42327.

It is an arithmetic number, because the mean of its divisors is an integer number (84650).

2²⁵³⁹⁴⁷ is an apocalyptic number.

253947 is a deficient number, since it is larger than the sum of its proper divisors (84653).

253947 is an equidigital number, since it uses as much as digits as its factorization.

253947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 84652.

The product of its digits is 7560, while the sum is 30.

The square root of 253947 is about 503.9315429699. The cubic root of 253947 is about 63.3258501469.

The spelling of 253947 in words is "two hundred fifty-three thousand, nine hundred forty-seven".