12115749 has 8 divisors (see below), whose sum is σ = 17004640. Its totient is φ = 7652016.

The previous prime is 12115739. The next prime is 12115769. The reversal of 12115749 is 94751121.

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

It is a de Polignac number, because none of the positive numbers 2^k-12115749 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 (12115729) 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, 106222 + ... + 106335.

It is an arithmetic number, because the mean of its divisors is an integer number (2125580).

Almost surely, 2^12115749 is an apocalyptic number.

12115749 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

It is an amenable number.

12115749 is a deficient number, since it is larger than the sum of its proper divisors (4888891).

12115749 is a wasteful number, since it uses less digits than its factorization.

12115749 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 212579.

The product of its digits is 2520, while the sum is 30.

The square root of 12115749 is about 3480.7684496387. The cubic root of 12115749 is about 229.6766028335.

The spelling of 12115749 in words is "twelve million, one hundred fifteen thousand, seven hundred forty-nine".