253426439 has 4 divisors (see below), whose sum is σ = 289630224. Its totient is φ = 217222656.

The previous prime is 253426421. The next prime is 253426493. The reversal of 253426439 is 934624352.

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

It is not a de Polignac number, because 253426439 - 2²⁴ = 236649223 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253426409) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18101882 + ... + 18101895.

It is an arithmetic number, because the mean of its divisors is an integer number (72407556).

Almost surely, 2^253426439 is an apocalyptic number.

253426439 is a deficient number, since it is larger than the sum of its proper divisors (36203785).

253426439 is an equidigital number, since it uses as much as digits as its factorization.

253426439 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 36203784.

The product of its digits is 155520, while the sum is 38.

The square root of 253426439 is about 15919.3730718267. The cubic root of 253426439 is about 632.8255040551.

The spelling of 253426439 in words is "two hundred fifty-three million, four hundred twenty-six thousand, four hundred thirty-nine".