253940869 has 16 divisors (see below), whose sum is σ = 313367040. Its totient is φ = 200390400.

The previous prime is 253940857. The next prime is 253940881. The reversal of 253940869 is 968049352.

It is an interprime number because it is at equal distance from previous prime (253940857) and next prime (253940881).

It is not a de Polignac number, because 253940869 - 2¹¹ = 253938821 is a prime.

It is a super-2 number, since 2×253940869² = 128971929896950322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253940899) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 33012 + ... + 39970.

It is an arithmetic number, because the mean of its divisors is an integer number (19585440).

Almost surely, 2^253940869 is an apocalyptic number.

It is an amenable number.

253940869 is a deficient number, since it is larger than the sum of its proper divisors (59426171).

253940869 is a wasteful number, since it uses less digits than its factorization.

253940869 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7380.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 253940869 is about 15935.5222380693. The cubic root of 253940869 is about 633.2534052103.

The spelling of 253940869 in words is "two hundred fifty-three million, nine hundred forty thousand, eight hundred sixty-nine".