12047945 has 16 divisors (see below), whose sum is σ = 17794560. Its totient is φ = 7625664.

The previous prime is 12047941. The next prime is 12047983. The reversal of 12047945 is 54974021.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12047945 - 2² = 12047941 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12047941) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 12785 + ... + 13694.

It is an arithmetic number, because the mean of its divisors is an integer number (1112160).

Almost surely, 2^12047945 is an apocalyptic number.

It is an amenable number.

12047945 is a deficient number, since it is larger than the sum of its proper divisors (5746615).

12047945 is a wasteful number, since it uses less digits than its factorization.

12047945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26504.

The product of its (nonzero) digits is 10080, while the sum is 32.

The square root of 12047945 is about 3471.0149812411. The cubic root of 12047945 is about 229.2473506899.

The spelling of 12047945 in words is "twelve million, forty-seven thousand, nine hundred forty-five".