22391407 has 2 divisors, whose sum is σ = 22391408. Its totient is φ = 22391406.

The previous prime is 22391399. The next prime is 22391429. The reversal of 22391407 is 70419322.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22391407 - 2³ = 22391399 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22391477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11195703 + 11195704.

It is an arithmetic number, because the mean of its divisors is an integer number (11195704).

Almost surely, 2^22391407 is an apocalyptic number.

22391407 is a deficient number, since it is larger than the sum of its proper divisors (1).

22391407 is an equidigital number, since it uses as much as digits as its factorization.

22391407 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3024, while the sum is 28.

The square root of 22391407 is about 4731.9559380873. The cubic root of 22391407 is about 281.8558985783.

The spelling of 22391407 in words is "twenty-two million, three hundred ninety-one thousand, four hundred seven".