12989749 has 8 divisors (see below), whose sum is σ = 13839840. Its totient is φ = 12156336.

The previous prime is 12989747. The next prime is 12989773. The reversal of 12989749 is 94798921.

12989749 is digitally balanced in base 2, because in such base 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 a cyclic number.

It is not a de Polignac number, because 12989749 - 2¹ = 12989747 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (12989747) 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, 2542 + ... + 5695.

It is an arithmetic number, because the mean of its divisors is an integer number (1729980).

Almost surely, 2^12989749 is an apocalyptic number.

12989749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12989749 is a deficient number, since it is larger than the sum of its proper divisors (850091).

12989749 is an equidigital number, since it uses as much as digits as its factorization.

12989749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8339.

The product of its digits is 326592, while the sum is 49.

The square root of 12989749 is about 3604.1294371873. The cubic root of 12989749 is about 235.0716485921.

The spelling of 12989749 in words is "twelve million, nine hundred eighty-nine thousand, seven hundred forty-nine".