12899403 has 24 divisors (see below), whose sum is σ = 21031920. Its totient is φ = 7546560.

The previous prime is 12899371. The next prime is 12899431. The reversal of 12899403 is 30499821.

It is not a de Polignac number, because 12899403 - 2⁵ = 12899371 is a prime.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (12899473) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 625 + ... + 5117.

It is an arithmetic number, because the mean of its divisors is an integer number (876330).

Almost surely, 2^12899403 is an apocalyptic number.

12899403 is a deficient number, since it is larger than the sum of its proper divisors (8132517).

12899403 is a wasteful number, since it uses less digits than its factorization.

12899403 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4539 (or 4536 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 36.

The square root of 12899403 is about 3591.5738889796. The cubic root of 12899403 is about 234.5253919037.

The spelling of 12899403 in words is "twelve million, eight hundred ninety-nine thousand, four hundred three".