12945389 has 8 divisors (see below), whose sum is σ = 13563072. Its totient is φ = 12332320.

The previous prime is 12945377. The next prime is 12945391. The reversal of 12945389 is 98354921.

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 12945389 - 2⁸ = 12945133 is a prime.

It is a super-2 number, since 2×12945389² = 335166192722642, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12944389) 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, 5462 + ... + 7464.

It is an arithmetic number, because the mean of its divisors is an integer number (1695384).

Almost surely, 2^12945389 is an apocalyptic number.

It is an amenable number.

12945389 is a deficient number, since it is larger than the sum of its proper divisors (617683).

12945389 is a wasteful number, since it uses less digits than its factorization.

12945389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2307.

The product of its digits is 77760, while the sum is 41.

The square root of 12945389 is about 3597.9701221661. The cubic root of 12945389 is about 234.8037534698.

The spelling of 12945389 in words is "twelve million, nine hundred forty-five thousand, three hundred eighty-nine".