9153989 has 4 divisors (see below), whose sum is σ = 9858156. Its totient is φ = 8449824.

The previous prime is 9153983. The next prime is 9153997. The reversal of 9153989 is 9893519.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 1481089 + 7672900 = 1217^2 + 2770^2 .

It is a cyclic number.

It is not a de Polignac number, because 9153989 - 2⁸ = 9153733 is a prime.

It is a super-2 number, since 2×9153989² = 167591029224242, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (9153983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 352064 + ... + 352089.

It is an arithmetic number, because the mean of its divisors is an integer number (2464539).

Almost surely, 2^9153989 is an apocalyptic number.

It is an amenable number.

9153989 is a deficient number, since it is larger than the sum of its proper divisors (704167).

9153989 is a wasteful number, since it uses less digits than its factorization.

9153989 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 704166.

The product of its digits is 87480, while the sum is 44.

The square root of 9153989 is about 3025.5559819643. Note that the first 3 decimals coincide. The cubic root of 9153989 is about 209.1880133203.

The spelling of 9153989 in words is "nine million, one hundred fifty-three thousand, nine hundred eighty-nine".