12511389 has 8 divisors (see below), whose sum is σ = 18198432. Its totient is φ = 7582640.

The previous prime is 12511361. The next prime is 12511399. The reversal of 12511389 is 98311521.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 12511389 - 2⁵ = 12511357 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12511349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 189534 + ... + 189599.

It is an arithmetic number, because the mean of its divisors is an integer number (2274804).

Almost surely, 2^12511389 is an apocalyptic number.

It is an amenable number.

12511389 is a deficient number, since it is larger than the sum of its proper divisors (5687043).

12511389 is a wasteful number, since it uses less digits than its factorization.

12511389 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 379147.

The product of its digits is 2160, while the sum is 30.

The square root of 12511389 is about 3537.1441870526. The cubic root of 12511389 is about 232.1499043586.

The spelling of 12511389 in words is "twelve million, five hundred eleven thousand, three hundred eighty-nine".