12199090 has 8 divisors (see below), whose sum is σ = 21958380. Its totient is φ = 4879632.

The previous prime is 12199087. The next prime is 12199093. The reversal of 12199090 is 9099121.

It is an interprime number because it is at equal distance from previous prime (12199087) and next prime (12199093).

It can be written as a sum of positive squares in 2 ways, for example, as 12089529 + 109561 = 3477^2 + 331^2 .

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

It is not an unprimeable number, because it can be changed into a prime (12199093) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 609945 + ... + 609964.

Almost surely, 2^12199090 is an apocalyptic number.

12199090 is a gapful number since it is divisible by the number (10) formed by its first and last digit.

12199090 is a deficient number, since it is larger than the sum of its proper divisors (9759290).

12199090 is a wasteful number, since it uses less digits than its factorization.

12199090 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1219916.

The product of its (nonzero) digits is 1458, while the sum is 31.

The square root of 12199090 is about 3492.7195707643. The cubic root of 12199090 is about 230.2020279093.

Adding to 12199090 its sum of digits (31), we get a palindrome (12199121).

The spelling of 12199090 in words is "twelve million, one hundred ninety-nine thousand, ninety".