12099418 has 4 divisors (see below), whose sum is σ = 18149130. Its totient is φ = 6049708.

The previous prime is 12099413. The next prime is 12099419. The reversal of 12099418 is 81499021.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 10349089 + 1750329 = 3217^2 + 1323^2 .

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 as a sum of consecutive naturals, namely, 3024853 + ... + 3024856.

Almost surely, 2^12099418 is an apocalyptic number.

12099418 is a deficient number, since it is larger than the sum of its proper divisors (6049712).

12099418 is an equidigital number, since it uses as much as digits as its factorization.

12099418 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6049711.

The product of its (nonzero) digits is 5184, while the sum is 34.

The square root of 12099418 is about 3478.4217685611. The cubic root of 12099418 is about 229.5733615855.

The spelling of 12099418 in words is "twelve million, ninety-nine thousand, four hundred eighteen".