253308939 has 16 divisors (see below), whose sum is σ = 376269600. Its totient is φ = 150506496.

The previous prime is 253308929. The next prime is 253308943. The reversal of 253308939 is 939803352.

It is not a de Polignac number, because 253308939 - 2⁵ = 253308907 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 253308939.

It is not an unprimeable number, because it can be changed into a prime (253308929) 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, 110854 + ... + 113115.

It is an arithmetic number, because the mean of its divisors is an integer number (23516850).

Almost surely, 2^253308939 is an apocalyptic number.

253308939 is a gapful number since it is divisible by the number (29) formed by its first and last digit.

253308939 is a deficient number, since it is larger than the sum of its proper divisors (122960661).

253308939 is a wasteful number, since it uses less digits than its factorization.

253308939 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 224014.

The product of its (nonzero) digits is 174960, while the sum is 42.

The square root of 253308939 is about 15915.6821719963. The cubic root of 253308939 is about 632.7276867269.

The spelling of 253308939 in words is "two hundred fifty-three million, three hundred eight thousand, nine hundred thirty-nine".