12989357 has 4 divisors (see below), whose sum is σ = 13183296. Its totient is φ = 12795420.

The previous prime is 12989351. The next prime is 12989387. The reversal of 12989357 is 75398921.

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.

It is a cyclic number.

It is not a de Polignac number, because 12989357 - 2¹⁸ = 12727213 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12989351) 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, 96869 + ... + 97002.

It is an arithmetic number, because the mean of its divisors is an integer number (3295824).

Almost surely, 2^12989357 is an apocalyptic number.

It is an amenable number.

12989357 is a deficient number, since it is larger than the sum of its proper divisors (193939).

12989357 is an equidigital number, since it uses as much as digits as its factorization.

12989357 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 193938.

The product of its digits is 136080, while the sum is 44.

The square root of 12989357 is about 3604.0750547124. The cubic root of 12989357 is about 235.0692839323.

The spelling of 12989357 in words is "twelve million, nine hundred eighty-nine thousand, three hundred fifty-seven".