12749499 has 24 divisors (see below), whose sum is σ = 21197280. Its totient is φ = 7233408.

The previous prime is 12749489. The next prime is 12749501. The reversal of 12749499 is 99494721.

It is a happy number.

12749499 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12749499 - 2⁹ = 12748987 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12749449) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9247 + ... + 10535.

It is an arithmetic number, because the mean of its divisors is an integer number (883220).

Almost surely, 2^12749499 is an apocalyptic number.

12749499 is a deficient number, since it is larger than the sum of its proper divisors (8447781).

12749499 is a wasteful number, since it uses less digits than its factorization.

12749499 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1459 (or 1456 counting only the distinct ones).

The product of its digits is 163296, while the sum is 45.

The square root of 12749499 is about 3570.6440595500. The cubic root of 12749499 is about 233.6133764604.

The spelling of 12749499 in words is "twelve million, seven hundred forty-nine thousand, four hundred ninety-nine".