12998859 has 4 divisors (see below), whose sum is σ = 17331816. Its totient is φ = 8665904.

The previous prime is 12998849. The next prime is 12998861. The reversal of 12998859 is 95889921.

12998859 is digitally balanced in base 2 and base 4, 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.

It is a cyclic number.

It is not a de Polignac number, because 12998859 - 2⁷ = 12998731 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12998809) 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, 2166474 + ... + 2166479.

It is an arithmetic number, because the mean of its divisors is an integer number (4332954).

Almost surely, 2^12998859 is an apocalyptic number.

12998859 is a deficient number, since it is larger than the sum of its proper divisors (4332957).

12998859 is an equidigital number, since it uses as much as digits as its factorization.

12998859 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4332956.

The product of its digits is 466560, while the sum is 51.

The square root of 12998859 is about 3605.3930437610. The cubic root of 12998859 is about 235.1265894096.

The spelling of 12998859 in words is "twelve million, nine hundred ninety-eight thousand, eight hundred fifty-nine".