12249867 has 24 divisors (see below), whose sum is σ = 19319808. Its totient is φ = 6762960.

The previous prime is 12249847. The next prime is 12249907. The reversal of 12249867 is 76894221.

12249867 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 12249867 - 2⁷ = 12249739 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12249827) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 19878 + ... + 20484.

It is an arithmetic number, because the mean of its divisors is an integer number (804992).

Almost surely, 2^12249867 is an apocalyptic number.

12249867 is a deficient number, since it is larger than the sum of its proper divisors (7069941).

12249867 is an equidigital number, since it uses as much as digits as its factorization.

12249867 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 679 (or 648 counting only the distinct ones).

The product of its digits is 48384, while the sum is 39.

The square root of 12249867 is about 3499.9809999484. The cubic root of 12249867 is about 230.5209803305.

The spelling of 12249867 in words is "twelve million, two hundred forty-nine thousand, eight hundred sixty-seven".