12427099 has 4 divisors (see below), whose sum is σ = 12449736. Its totient is φ = 12404464.

The previous prime is 12427097. The next prime is 12427117. The reversal of 12427099 is 99072421.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 12427099 - 2¹ = 12427097 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12427091) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 10474 + ... + 11599.

It is an arithmetic number, because the mean of its divisors is an integer number (3112434).

Almost surely, 2^12427099 is an apocalyptic number.

12427099 is a deficient number, since it is larger than the sum of its proper divisors (22637).

12427099 is an equidigital number, since it uses as much as digits as its factorization.

12427099 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 22636.

The product of its (nonzero) digits is 9072, while the sum is 34.

The square root of 12427099 is about 3525.2090718140. The cubic root of 12427099 is about 231.6273931205.

The spelling of 12427099 in words is "twelve million, four hundred twenty-seven thousand, ninety-nine".