253979 has 6 divisors (see below), whose sum is σ = 279300. Its totient is φ = 230780.

The previous prime is 253969. The next prime is 253987. The reversal of 253979 is 979352.

253979 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 253979 - 2¹⁶ = 188443 is a prime.

It is a Duffinian number.

It is an inconsummate number, since it does not exist a number n which divided by its sum of digits gives 253979.

It is not an unprimeable number, because it can be changed into a prime (253909) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 929 + ... + 1170.

It is an arithmetic number, because the mean of its divisors is an integer number (46550).

2²⁵³⁹⁷⁹ is an apocalyptic number.

253979 is a deficient number, since it is larger than the sum of its proper divisors (25321).

253979 is a wasteful number, since it uses less digits than its factorization.

253979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2121 (or 2110 counting only the distinct ones).

The product of its digits is 17010, while the sum is 35.

The square root of 253979 is about 503.9632923140. The cubic root of 253979 is about 63.3285099435.

It can be divided in two parts, 25 and 3979, that added together give a palindrome (4004).

The spelling of 253979 in words is "two hundred fifty-three thousand, nine hundred seventy-nine".