12399895 has 8 divisors (see below), whose sum is σ = 14900256. Its totient is φ = 9906336.

The previous prime is 12399883. The next prime is 12399901. The reversal of 12399895 is 59899321.

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

It is a cyclic number.

It is not a de Polignac number, because 12399895 - 2⁹ = 12399383 is a prime.

It is a super-2 number, since 2×12399895² = 307514792022050, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4149 + ... + 6481.

It is an arithmetic number, because the mean of its divisors is an integer number (1862532).

Almost surely, 2^12399895 is an apocalyptic number.

12399895 is a deficient number, since it is larger than the sum of its proper divisors (2500361).

12399895 is a wasteful number, since it uses less digits than its factorization.

12399895 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3401.

The product of its digits is 174960, while the sum is 46.

The square root of 12399895 is about 3521.3484633021. The cubic root of 12399895 is about 231.4582521393.

The spelling of 12399895 in words is "twelve million, three hundred ninety-nine thousand, eight hundred ninety-five".