253998963 has 8 divisors (see below), whose sum is σ = 376294800. Its totient is φ = 169332624.

The previous prime is 253998961. The next prime is 253998967. The reversal of 253998963 is 369899352.

It is not a de Polignac number, because 253998963 - 2¹ = 253998961 is a prime.

It is not an unprimeable number, because it can be changed into a prime (253998961) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4703658 + ... + 4703711.

It is an arithmetic number, because the mean of its divisors is an integer number (47036850).

Almost surely, 2^253998963 is an apocalyptic number.

253998963 is a deficient number, since it is larger than the sum of its proper divisors (122295837).

253998963 is an equidigital number, since it uses as much as digits as its factorization.

253998963 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9407378 (or 9407372 counting only the distinct ones).

The product of its digits is 3149280, while the sum is 54.

The square root of 253998963 is about 15937.3449168925. The cubic root of 253998963 is about 633.3016912785.

The spelling of 253998963 in words is "two hundred fifty-three million, nine hundred ninety-eight thousand, nine hundred sixty-three".