12499969 has 4 divisors (see below), whose sum is σ = 12837844. Its totient is φ = 12162096.

The previous prime is 12499919. The next prime is 12499987. The reversal of 12499969 is 96999421.

12499969 is digitally balanced in base 2, 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: 96999421 = 1559 ⋅62219.

It can be written as a sum of positive squares in 2 ways, for example, as 5817744 + 6682225 = 2412^2 + 2585^2 .

It is a cyclic number.

It is not a de Polignac number, because 12499969 - 2²³ = 4111361 is a prime.

It is a super-2 number, since 2×12499969² = 312498450001922, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12499909) 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, 168882 + ... + 168955.

It is an arithmetic number, because the mean of its divisors is an integer number (3209461).

Almost surely, 2^12499969 is an apocalyptic number.

It is an amenable number.

12499969 is a deficient number, since it is larger than the sum of its proper divisors (337875).

12499969 is an equidigital number, since it uses as much as digits as its factorization.

12499969 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 337874.

The product of its digits is 314928, while the sum is 49.

The square root of 12499969 is about 3535.5295218680. The cubic root of 12499969 is about 232.0792498281.

The spelling of 12499969 in words is "twelve million, four hundred ninety-nine thousand, nine hundred sixty-nine".