12149857 has 8 divisors (see below), whose sum is σ = 12339360. Its totient is φ = 11962080.

The previous prime is 12149843. The next prime is 12149867. The reversal of 12149857 is 75894121.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-12149857 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12149827) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 21069 + ... + 21637.

It is an arithmetic number, because the mean of its divisors is an integer number (1542420).

Almost surely, 2^12149857 is an apocalyptic number.

It is an amenable number.

12149857 is a deficient number, since it is larger than the sum of its proper divisors (189503).

12149857 is a wasteful number, since it uses less digits than its factorization.

12149857 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 863.

The product of its digits is 20160, while the sum is 37.

The square root of 12149857 is about 3485.6644990590. The cubic root of 12149857 is about 229.8919278030.

The spelling of 12149857 in words is "twelve million, one hundred forty-nine thousand, eight hundred fifty-seven".