12291407 has 8 divisors (see below), whose sum is σ = 13240320. Its totient is φ = 11377080.

The previous prime is 12291403. The next prime is 12291413. The reversal of 12291407 is 70419221.

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 12291407 - 2² = 12291403 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 (12291403) 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, 7907 + ... + 9332.

It is an arithmetic number, because the mean of its divisors is an integer number (1655040).

Almost surely, 2^12291407 is an apocalyptic number.

12291407 is a deficient number, since it is larger than the sum of its proper divisors (948913).

12291407 is a wasteful number, since it uses less digits than its factorization.

12291407 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17293.

The product of its (nonzero) digits is 1008, while the sum is 26.

The square root of 12291407 is about 3505.9102954868. The cubic root of 12291407 is about 230.7812562936.

The spelling of 12291407 in words is "twelve million, two hundred ninety-one thousand, four hundred seven".