12087399 has 8 divisors (see below), whose sum is σ = 16223872. Its totient is φ = 8004600.

The previous prime is 12087379. The next prime is 12087409. The reversal of 12087399 is 99378021.

12087399 is digitally balanced in base 2, base 3 and base 4, because in such bases it contains all the possibile digits an equal number of times.

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

It is not a de Polignac number, because 12087399 - 2⁵ = 12087367 is a prime.

It is a super-2 number, since 2×12087399² = 292210429170402, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12087349) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12889 + ... + 13794.

It is an arithmetic number, because the mean of its divisors is an integer number (2027984).

Almost surely, 2^12087399 is an apocalyptic number.

12087399 is a deficient number, since it is larger than the sum of its proper divisors (4136473).

12087399 is a wasteful number, since it uses less digits than its factorization.

12087399 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26837.

The product of its (nonzero) digits is 27216, while the sum is 39.

The square root of 12087399 is about 3476.6936879743. The cubic root of 12087399 is about 229.4973205624.

The spelling of 12087399 in words is "twelve million, eighty-seven thousand, three hundred ninety-nine".