253964139 has 64 divisors (see below), whose sum is σ = 426746880. Its totient is φ = 131973120.

The previous prime is 253964129. The next prime is 253964201. The reversal of 253964139 is 931469352.

It is a happy number.

It is not a de Polignac number, because 253964139 - 2⁹ = 253963627 is a prime.

It is a super-2 number, since 2×253964139² = 128995567796022642, which contains 22 as substring.

253964139 is a Rhonda number in base 6.

It is a self number, because there is not a number n which added to its sum of digits gives 253964139.

It is not an unprimeable number, because it can be changed into a prime (253964119) 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 63 ways as a sum of consecutive naturals, for example, 707242 + ... + 707600.

It is an arithmetic number, because the mean of its divisors is an integer number (6667920).

Almost surely, 2^253964139 is an apocalyptic number.

253964139 is a deficient number, since it is larger than the sum of its proper divisors (172782741).

253964139 is a wasteful number, since it uses less digits than its factorization.

253964139 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 500.

The product of its digits is 174960, while the sum is 42.

The square root of 253964139 is about 15936.2523511646. The cubic root of 253964139 is about 633.2727474516.

The spelling of 253964139 in words is "two hundred fifty-three million, nine hundred sixty-four thousand, one hundred thirty-nine".