989591253 has 16 divisors (see below), whose sum is σ = 1517558400. Its totient is φ = 561877056.

The previous prime is 989591221. The next prime is 989591299. The reversal of 989591253 is 352195989.

It is not a de Polignac number, because 989591253 - 2⁵ = 989591221 is a prime.

It is a super-2 number, since 2×989591253² = 1958581696028220018, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 989591196 and 989591205.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (989591153) 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, 146778 + ... + 153371.

It is an arithmetic number, because the mean of its divisors is an integer number (94847400).

Almost surely, 2^989591253 is an apocalyptic number.

It is an amenable number.

989591253 is a deficient number, since it is larger than the sum of its proper divisors (527967147).

989591253 is a wasteful number, since it uses less digits than its factorization.

989591253 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 300316.

The product of its digits is 874800, while the sum is 51.

The square root of 989591253 is about 31457.7693583000. The cubic root of 989591253 is about 996.5183095669.

The spelling of 989591253 in words is "nine hundred eighty-nine million, five hundred ninety-one thousand, two hundred fifty-three".