12099415 has 4 divisors (see below), whose sum is σ = 14519304. Its totient is φ = 9679528.

The previous prime is 12099413. The next prime is 12099419. The reversal of 12099415 is 51499021.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 51499021 = 7 ⋅7357003.

It is a cyclic number.

It is not a de Polignac number, because 12099415 - 2¹ = 12099413 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12099413) 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, 1209937 + ... + 1209946.

It is an arithmetic number, because the mean of its divisors is an integer number (3629826).

Almost surely, 2^12099415 is an apocalyptic number.

12099415 is a deficient number, since it is larger than the sum of its proper divisors (2419889).

12099415 is an equidigital number, since it uses as much as digits as its factorization.

12099415 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2419888.

The product of its (nonzero) digits is 3240, while the sum is 31.

The square root of 12099415 is about 3478.4213373311. The cubic root of 12099415 is about 229.5733426116.

The spelling of 12099415 in words is "twelve million, ninety-nine thousand, four hundred fifteen".