12150649 has 4 divisors (see below), whose sum is σ = 13886464. Its totient is φ = 10414836.

The previous prime is 12150641. The next prime is 12150673. The reversal of 12150649 is 94605121.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 94605121 = 13 ⋅7277317.

It is a cyclic number.

It is not a de Polignac number, because 12150649 - 2³ = 12150641 is a prime.

It is a super-2 number, since 2×12150649² = 295276542242402, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (12150641) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 867897 + ... + 867910.

It is an arithmetic number, because the mean of its divisors is an integer number (3471616).

Almost surely, 2^12150649 is an apocalyptic number.

It is an amenable number.

12150649 is a deficient number, since it is larger than the sum of its proper divisors (1735815).

12150649 is an equidigital number, since it uses as much as digits as its factorization.

12150649 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1735814.

The product of its (nonzero) digits is 2160, while the sum is 28.

The square root of 12150649 is about 3485.7781053877. The cubic root of 12150649 is about 229.8969229359.

The spelling of 12150649 in words is "twelve million, one hundred fifty thousand, six hundred forty-nine".