253911489 has 16 divisors (see below), whose sum is σ = 365007552. Its totient is φ = 156074688.

The previous prime is 253911487. The next prime is 253911503. The reversal of 253911489 is 984119352.

It is not a de Polignac number, because 253911489 - 2¹ = 253911487 is a prime.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 253911489.

It is not an unprimeable number, because it can be changed into a prime (253911487) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 36294 + ... + 42720.

It is an arithmetic number, because the mean of its divisors is an integer number (22812972).

Almost surely, 2^253911489 is an apocalyptic number.

It is an amenable number.

253911489 is a deficient number, since it is larger than the sum of its proper divisors (111096063).

253911489 is a wasteful number, since it uses less digits than its factorization.

253911489 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7456.

The product of its digits is 77760, while the sum is 42.

The square root of 253911489 is about 15934.6003715186. The cubic root of 253911489 is about 633.2289825922.

It can be divided in two parts, 2539 and 11489, that added together give a triangular number (14028 = T₁₆₇).

The spelling of 253911489 in words is "two hundred fifty-three million, nine hundred eleven thousand, four hundred eighty-nine".