253432989 has 16 divisors (see below), whose sum is σ = 375710400. Its totient is φ = 168841008.

The previous prime is 253432939. The next prime is 253432997. The reversal of 253432989 is 989234352.

It is a happy number.

253432989 is a `hidden beast` number, since 2 + 534 + 32 + 9 + 89 = 666.

It is a de Polignac number, because none of the positive numbers 2^k-253432989 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (253432939) 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, 61147 + ... + 65159.

It is an arithmetic number, because the mean of its divisors is an integer number (23481900).

Almost surely, 2^253432989 is an apocalyptic number.

It is an amenable number.

253432989 is a deficient number, since it is larger than the sum of its proper divisors (122277411).

253432989 is a wasteful number, since it uses less digits than its factorization.

253432989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6361 (or 6355 counting only the distinct ones).

The product of its digits is 466560, while the sum is 45.

The square root of 253432989 is about 15919.5787946792. The cubic root of 253432989 is about 632.8309559610.

The spelling of 253432989 in words is "two hundred fifty-three million, four hundred thirty-two thousand, nine hundred eighty-nine".