12417945 has 16 divisors (see below), whose sum is σ = 20554560. Its totient is φ = 6394304.

The previous prime is 12417929. The next prime is 12417947. The reversal of 12417945 is 54971421.

It is a happy number.

It is a cyclic number.

It is not a de Polignac number, because 12417945 - 2⁴ = 12417929 is a prime.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (12417947) 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, 13839 + ... + 14708.

It is an arithmetic number, because the mean of its divisors is an integer number (1284660).

Almost surely, 2^12417945 is an apocalyptic number.

12417945 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

12417945 is a deficient number, since it is larger than the sum of its proper divisors (8136615).

12417945 is a wasteful number, since it uses less digits than its factorization.

12417945 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28584.

The product of its digits is 10080, while the sum is 33.

The square root of 12417945 is about 3523.9104699183. The cubic root of 12417945 is about 231.5705056686.

The spelling of 12417945 in words is "twelve million, four hundred seventeen thousand, nine hundred forty-five".