989169953 has 4 divisors (see below), whose sum is σ = 998414640. Its totient is φ = 979925268.

The previous prime is 989169911. The next prime is 989169959. The reversal of 989169953 is 359961989.

989169953 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 359961989 = 67 ⋅5372567.

It is a cyclic number.

It is not a de Polignac number, because 989169953 - 2¹⁴ = 989153569 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 989169892 and 989169901.

It is not an unprimeable number, because it can be changed into a prime (989169959) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4622183 + ... + 4622396.

It is an arithmetic number, because the mean of its divisors is an integer number (249603660).

Almost surely, 2^989169953 is an apocalyptic number.

It is an amenable number.

989169953 is a deficient number, since it is larger than the sum of its proper divisors (9244687).

989169953 is a wasteful number, since it uses less digits than its factorization.

989169953 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9244686.

The product of its digits is 4723920, while the sum is 59.

The square root of 989169953 is about 31451.0723664552. The cubic root of 989169953 is about 996.3768731387.

The spelling of 989169953 in words is "nine hundred eighty-nine million, one hundred sixty-nine thousand, nine hundred fifty-three".