12291607 has 2 divisors, whose sum is σ = 12291608. Its totient is φ = 12291606.

The previous prime is 12291589. The next prime is 12291623. The reversal of 12291607 is 70619221.

It is a happy number.

12291607 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 12291607 - 2¹¹ = 12289559 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12291007) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6145803 + 6145804.

It is an arithmetic number, because the mean of its divisors is an integer number (6145804).

Almost surely, 2^12291607 is an apocalyptic number.

12291607 is a deficient number, since it is larger than the sum of its proper divisors (1).

12291607 is an equidigital number, since it uses as much as digits as its factorization.

12291607 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1512, while the sum is 28.

The square root of 12291607 is about 3505.9388186333. The cubic root of 12291607 is about 230.7825080082.

The spelling of 12291607 in words is "twelve million, two hundred ninety-one thousand, six hundred seven".