253994984 has 8 divisors (see below), whose sum is σ = 476240610. Its totient is φ = 126997488.

The previous prime is 253994969. The next prime is 253994989. The reversal of 253994984 is 489499352.

It can be written as a sum of positive squares in only one way, i.e., 223502500 + 30492484 = 14950^2 + 5522^2 .

It is a tau number, because it is divible by the number of its divisors (8).

It is not an unprimeable number, because it can be changed into a prime (253994989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 15874679 + ... + 15874694.

Almost surely, 2^253994984 is an apocalyptic number.

It is an amenable number.

253994984 is a deficient number, since it is larger than the sum of its proper divisors (222245626).

253994984 is a wasteful number, since it uses less digits than its factorization.

253994984 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 31749379 (or 31749375 counting only the distinct ones).

The product of its digits is 2799360, while the sum is 53.

The square root of 253994984 is about 15937.2200838164. The cubic root of 253994984 is about 633.2983842826.

The spelling of 253994984 in words is "two hundred fifty-three million, nine hundred ninety-four thousand, nine hundred eighty-four".