12199402 has 4 divisors (see below), whose sum is σ = 18299106. Its totient is φ = 6099700.

The previous prime is 12199393. The next prime is 12199403. The reversal of 12199402 is 20499121.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 20499121 = 739 ⋅27739.

It can be written as a sum of positive squares in only one way, i.e., 12187081 + 12321 = 3491^2 + 111^2 .

It is not an unprimeable number, because it can be changed into a prime (12199403) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3049849 + ... + 3049852.

Almost surely, 2^12199402 is an apocalyptic number.

12199402 is a deficient number, since it is larger than the sum of its proper divisors (6099704).

12199402 is an equidigital number, since it uses as much as digits as its factorization.

12199402 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6099703.

The product of its (nonzero) digits is 1296, while the sum is 28.

The square root of 12199402 is about 3492.7642348146. The cubic root of 12199402 is about 230.2039904169.

The spelling of 12199402 in words is "twelve million, one hundred ninety-nine thousand, four hundred two".