12789451 has 4 divisors (see below), whose sum is σ = 13462600. Its totient is φ = 12116304.

The previous prime is 12789433. The next prime is 12789461. The reversal of 12789451 is 15498721.

12789451 is digitally balanced in base 2 and base 3, because in such bases 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 an emirpimes, since its reverse is a distinct semiprime: 15498721 = 7 ⋅2214103.

It is a cyclic number.

It is not a de Polignac number, because 12789451 - 2⁵ = 12789419 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 12789451.

It is not an unprimeable number, because it can be changed into a prime (12789401) 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, 336546 + ... + 336583.

It is an arithmetic number, because the mean of its divisors is an integer number (3365650).

Almost surely, 2^12789451 is an apocalyptic number.

12789451 is a deficient number, since it is larger than the sum of its proper divisors (673149).

12789451 is an equidigital number, since it uses as much as digits as its factorization.

12789451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 673148.

The product of its digits is 20160, while the sum is 37.

The square root of 12789451 is about 3576.2341925551. The cubic root of 12789451 is about 233.8571400140.

The spelling of 12789451 in words is "twelve million, seven hundred eighty-nine thousand, four hundred fifty-one".