12394987 has 8 divisors (see below), whose sum is σ = 13649472. Its totient is φ = 11161800.

The previous prime is 12394979. The next prime is 12395027. The reversal of 12394987 is 78949321.

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 12394987 - 2³ = 12394979 is a prime.

It is a Duffinian number.

It is a zygodrome in base 5.

It is not an unprimeable number, because it can be changed into a prime (12394937) 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, 4089 + ... + 6442.

It is an arithmetic number, because the mean of its divisors is an integer number (1706184).

Almost surely, 2^12394987 is an apocalyptic number.

12394987 is a deficient number, since it is larger than the sum of its proper divisors (1254485).

12394987 is a wasteful number, since it uses less digits than its factorization.

12394987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10649.

The product of its digits is 108864, while the sum is 43.

The square root of 12394987 is about 3520.6515022081. The cubic root of 12394987 is about 231.4277102943.

It can be divided in two parts, 1239 and 4987, that added together give a palindrome (6226).

The spelling of 12394987 in words is "twelve million, three hundred ninety-four thousand, nine hundred eighty-seven".