12399285 has 16 divisors (see below), whose sum is σ = 19946304. Its totient is φ = 6577152.

The previous prime is 12399271. The next prime is 12399293. The reversal of 12399285 is 58299321.

It is not a de Polignac number, because 12399285 - 2⁵ = 12399253 is a prime.

It is a super-2 number, since 2×12399285² = 307484537022450, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 754 + ... + 5036.

It is an arithmetic number, because the mean of its divisors is an integer number (1246644).

Almost surely, 2^12399285 is an apocalyptic number.

12399285 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12399285 is a deficient number, since it is larger than the sum of its proper divisors (7547019).

12399285 is a wasteful number, since it uses less digits than its factorization.

12399285 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4484.

The product of its digits is 38880, while the sum is 39.

The square root of 12399285 is about 3521.2618476904. The cubic root of 12399285 is about 231.4544566274.

The spelling of 12399285 in words is "twelve million, three hundred ninety-nine thousand, two hundred eighty-five".