253923985 has 16 divisors (see below), whose sum is σ = 368724096. Its totient is φ = 163876608.

The previous prime is 253923953. The next prime is 253924039. The reversal of 253923985 is 589329352.

It is a happy number.

It is not a de Polignac number, because 253923985 - 2⁵ = 253923953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 212787 + ... + 213976.

It is an arithmetic number, because the mean of its divisors is an integer number (23045256).

Almost surely, 2^253923985 is an apocalyptic number.

It is an amenable number.

253923985 is a deficient number, since it is larger than the sum of its proper divisors (114800111).

253923985 is a wasteful number, since it uses less digits than its factorization.

253923985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 426792.

The product of its digits is 583200, while the sum is 46.

The square root of 253923985 is about 15934.9924694052. The cubic root of 253923985 is about 633.2393703322.

The spelling of 253923985 in words is "two hundred fifty-three million, nine hundred twenty-three thousand, nine hundred eighty-five".