12899771 has 4 divisors (see below), whose sum is σ = 13001472. Its totient is φ = 12798072.

The previous prime is 12899759. The next prime is 12899773. The reversal of 12899771 is 17799821.

12899771 is digitally balanced in base 3, because in such base 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: 17799821 = 13 ⋅1369217.

It is a cyclic number.

It is not a de Polignac number, because 12899771 - 2²² = 8705467 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12899773) 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, 50660 + ... + 50913.

It is an arithmetic number, because the mean of its divisors is an integer number (3250368).

Almost surely, 2^12899771 is an apocalyptic number.

12899771 is a deficient number, since it is larger than the sum of its proper divisors (101701).

12899771 is a wasteful number, since it uses less digits than its factorization.

12899771 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 101700.

The product of its digits is 63504, while the sum is 44.

The square root of 12899771 is about 3591.6251196360. The cubic root of 12899771 is about 234.5276220980.

It can be divided in two parts, 128 and 99771, that added together give a palindrome (99899).

The spelling of 12899771 in words is "twelve million, eight hundred ninety-nine thousand, seven hundred seventy-one".