253434139 has 4 divisors (see below), whose sum is σ = 289639024. Its totient is φ = 217229256.

The previous prime is 253434119. The next prime is 253434143. The reversal of 253434139 is 931434352.

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 253434139 - 2⁹ = 253433627 is a prime.

It is a super-3 number, since 3×253434139³ (a number of 26 digits) contains 333 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (253434119) 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, 18102432 + ... + 18102445.

It is an arithmetic number, because the mean of its divisors is an integer number (72409756).

Almost surely, 2^253434139 is an apocalyptic number.

253434139 is a deficient number, since it is larger than the sum of its proper divisors (36204885).

253434139 is an equidigital number, since it uses as much as digits as its factorization.

253434139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36204884.

The product of its digits is 38880, while the sum is 34.

The square root of 253434139 is about 15919.6149136843. The cubic root of 253434139 is about 632.8319131562.

The spelling of 253434139 in words is "two hundred fifty-three million, four hundred thirty-four thousand, one hundred thirty-nine".