253680889 has 12 divisors (see below), whose sum is σ = 321925968. Its totient is φ = 197673000.

The previous prime is 253680887. The next prime is 253680971. The reversal of 253680889 is 988086352.

It is not a de Polignac number, because 253680889 - 2¹ = 253680887 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (49).

It is not an unprimeable number, because it can be changed into a prime (253680887) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 234787 + ... + 235864.

It is an arithmetic number, because the mean of its divisors is an integer number (26827164).

Almost surely, 2^253680889 is an apocalyptic number.

It is an amenable number.

253680889 is a deficient number, since it is larger than the sum of its proper divisors (68245079).

253680889 is a wasteful number, since it uses less digits than its factorization.

253680889 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 470676 (or 470669 counting only the distinct ones).

The product of its (nonzero) digits is 829440, while the sum is 49.

The square root of 253680889 is about 15927.3629016231. The cubic root of 253680889 is about 633.0372270166.

The spelling of 253680889 in words is "two hundred fifty-three million, six hundred eighty thousand, eight hundred eighty-nine".