12491699 has 8 divisors (see below), whose sum is σ = 13653360. Its totient is φ = 11334400.

The previous prime is 12491693. The next prime is 12491701. The reversal of 12491699 is 99619421.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 12491699 - 2⁸ = 12491443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12491693) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 9047 + ... + 10335.

It is an arithmetic number, because the mean of its divisors is an integer number (1706670).

Almost surely, 2^12491699 is an apocalyptic number.

12491699 is a deficient number, since it is larger than the sum of its proper divisors (1161661).

12491699 is a wasteful number, since it uses less digits than its factorization.

12491699 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2181.

The product of its digits is 34992, while the sum is 41.

The square root of 12491699 is about 3534.3597722926. The cubic root of 12491699 is about 232.0280571993.

The spelling of 12491699 in words is "twelve million, four hundred ninety-one thousand, six hundred ninety-nine".