253763944 has 24 divisors (see below), whose sum is σ = 553491090. Its totient is φ = 108755808.

The previous prime is 253763933. The next prime is 253763957. The reversal of 253763944 is 449367352.

It can be written as a sum of positive squares in only one way, i.e., 251603044 + 2160900 = 15862^2 + 1470^2 .

It is a super-2 number, since 2×253763944² = 128792278548870272, which contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 253763944.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 323287 + ... + 324070.

Almost surely, 2^253763944 is an apocalyptic number.

It is an amenable number.

253763944 is an abundant number, since it is smaller than the sum of its proper divisors (299727146).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

253763944 is a wasteful number, since it uses less digits than its factorization.

253763944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 647377 (or 647366 counting only the distinct ones).

The product of its digits is 544320, while the sum is 43.

The square root of 253763944 is about 15929.9699936943. The cubic root of 253763944 is about 633.1063048389.

The spelling of 253763944 in words is "two hundred fifty-three million, seven hundred sixty-three thousand, nine hundred forty-four".