12999167 has 4 divisors (see below), whose sum is σ = 13008840. Its totient is φ = 12989496.

The previous prime is 12999157. The next prime is 12999179. The reversal of 12999167 is 76199921.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length, and also an emirpimes, since its reverse is a distinct semiprime: 76199921 = 7 ⋅10885703.

It is a cyclic number.

It is not a de Polignac number, because 12999167 - 2¹⁰ = 12998143 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 (12999127) 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, 2417 + ... + 5642.

It is an arithmetic number, because the mean of its divisors is an integer number (3252210).

Almost surely, 2^12999167 is an apocalyptic number.

12999167 is a deficient number, since it is larger than the sum of its proper divisors (9673).

12999167 is an equidigital number, since it uses as much as digits as its factorization.

12999167 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 9672.

The product of its digits is 61236, while the sum is 44.

The square root of 12999167 is about 3605.4357572976. The cubic root of 12999167 is about 235.1284464551.

The spelling of 12999167 in words is "twelve million, nine hundred ninety-nine thousand, one hundred sixty-seven".