12905199 has 24 divisors (see below), whose sum is σ = 19784960. Its totient is φ = 8083152.

The previous prime is 12905183. The next prime is 12905209. The reversal of 12905199 is 99150921.

It is not a de Polignac number, because 12905199 - 2⁴ = 12905183 is a prime.

It is a super-2 number, since 2×12905199² = 333088322459202, which contains 22 as substring.

It is a hoax number, since the sum of its digits (36) coincides with the sum of the digits of its distinct prime factors.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12905699) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 27642 + ... + 28104.

Almost surely, 2^12905199 is an apocalyptic number.

12905199 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

12905199 is a deficient number, since it is larger than the sum of its proper divisors (6879761).

12905199 is a wasteful number, since it uses less digits than its factorization.

12905199 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 651 (or 648 counting only the distinct ones).

The product of its (nonzero) digits is 7290, while the sum is 36.

The square root of 12905199 is about 3592.3806869540. The cubic root of 12905199 is about 234.5605125377.

The spelling of 12905199 in words is "twelve million, nine hundred five thousand, one hundred ninety-nine".