12649499 has 2 divisors, whose sum is σ = 12649500. Its totient is φ = 12649498.

The previous prime is 12649493. The next prime is 12649529. The reversal of 12649499 is 99494621.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 12649499 - 2¹² = 12645403 is a prime.

It is a Chen prime.

It is a plaindrome in base 15.

It is not a weakly prime, because it can be changed into another prime (12649493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6324749 + 6324750.

It is an arithmetic number, because the mean of its divisors is an integer number (6324750).

Almost surely, 2^12649499 is an apocalyptic number.

12649499 is a deficient number, since it is larger than the sum of its proper divisors (1).

12649499 is an equidigital number, since it uses as much as digits as its factorization.

12649499 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 44.

The square root of 12649499 is about 3556.6134172834. The cubic root of 12649499 is about 233.0009946724. Note that the first 3 decimals are identical.

The spelling of 12649499 in words is "twelve million, six hundred forty-nine thousand, four hundred ninety-nine".