12199617 has 6 divisors (see below), whose sum is σ = 17621682. Its totient is φ = 8133072.

The previous prime is 12199609. The next prime is 12199643. The reversal of 12199617 is 71699121.

It can be written as a sum of positive squares in only one way, i.e., 11553201 + 646416 = 3399^2 + 804^2 .

It is not a de Polignac number, because 12199617 - 2³ = 12199609 is a prime.

It is not an unprimeable number, because it can be changed into a prime (12199697) 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 5 ways as a sum of consecutive naturals, for example, 677748 + ... + 677765.

It is an arithmetic number, because the mean of its divisors is an integer number (2936947).

Almost surely, 2^12199617 is an apocalyptic number.

It is an amenable number.

12199617 is a deficient number, since it is larger than the sum of its proper divisors (5422065).

12199617 is a wasteful number, since it uses less digits than its factorization.

12199617 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1355519 (or 1355516 counting only the distinct ones).

The product of its digits is 6804, while the sum is 36.

The square root of 12199617 is about 3492.7950125938. The cubic root of 12199617 is about 230.2053427665.

The spelling of 12199617 in words is "twelve million, one hundred ninety-nine thousand, six hundred seventeen".