253844413 has 4 divisors (see below), whose sum is σ = 254934108. Its totient is φ = 252754720.

The previous prime is 253844387. The next prime is 253844417. The reversal of 253844413 is 314448352.

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

It can be written as a sum of positive squares in 2 ways, for example, as 144913444 + 108930969 = 12038^2 + 10437^2 .

It is a cyclic number.

It is not a de Polignac number, because 253844413 - 2¹³ = 253836221 is a prime.

It is a super-2 number, since 2×253844413² = 128873972022629138, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253844417) 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, 544498 + ... + 544963.

It is an arithmetic number, because the mean of its divisors is an integer number (63733527).

Almost surely, 2^253844413 is an apocalyptic number.

It is an amenable number.

253844413 is a deficient number, since it is larger than the sum of its proper divisors (1089695).

253844413 is a wasteful number, since it uses less digits than its factorization.

253844413 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1089694.

The product of its digits is 46080, while the sum is 34.

The square root of 253844413 is about 15932.4955044714. The cubic root of 253844413 is about 633.1732174801.

The spelling of 253844413 in words is "two hundred fifty-three million, eight hundred forty-four thousand, four hundred thirteen".