12149894 has 8 divisors (see below), whose sum is σ = 18243360. Its totient is φ = 6068776.

The previous prime is 12149881. The next prime is 12149933. The reversal of 12149894 is 49894121.

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

It is a super-2 number, since 2×12149894² = 295239848422472, which contains 22 as substring.

It is an alternating number because its digits alternate between odd and even.

It is a congruent number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 14 + ... + 4929.

It is an arithmetic number, because the mean of its divisors is an integer number (2280420).

Almost surely, 2^12149894 is an apocalyptic number.

12149894 is a deficient number, since it is larger than the sum of its proper divisors (6093466).

12149894 is a wasteful number, since it uses less digits than its factorization.

12149894 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6174.

The product of its digits is 20736, while the sum is 38.

The square root of 12149894 is about 3485.6698065078. The cubic root of 12149894 is about 229.8921611663.

The spelling of 12149894 in words is "twelve million, one hundred forty-nine thousand, eight hundred ninety-four".