12749199 has 16 divisors (see below), whose sum is σ = 18154752. Its totient is φ = 7939008.

The previous prime is 12749197. The next prime is 12749239. The reversal of 12749199 is 99194721.

It is not a de Polignac number, because 12749199 - 2¹ = 12749197 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 12749199.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12749197) 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 15 ways as a sum of consecutive naturals, for example, 819 + ... + 5115.

It is an arithmetic number, because the mean of its divisors is an integer number (1134672).

Almost surely, 2^12749199 is an apocalyptic number.

12749199 is a deficient number, since it is larger than the sum of its proper divisors (5405553).

12749199 is a wasteful number, since it uses less digits than its factorization.

12749199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4366.

The product of its digits is 40824, while the sum is 42.

The square root of 12749199 is about 3570.6020500750. The cubic root of 12749199 is about 233.6115441123.

The spelling of 12749199 in words is "twelve million, seven hundred forty-nine thousand, one hundred ninety-nine".