22791427 has 2 divisors, whose sum is σ = 22791428. Its totient is φ = 22791426.

The previous prime is 22791401. The next prime is 22791437. The reversal of 22791427 is 72419722.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22791427 - 2¹⁹ = 22267139 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22791392 and 22791401.

It is not a weakly prime, because it can be changed into another prime (22791437) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11395713 + 11395714.

It is an arithmetic number, because the mean of its divisors is an integer number (11395714).

Almost surely, 2^22791427 is an apocalyptic number.

22791427 is a deficient number, since it is larger than the sum of its proper divisors (1).

22791427 is an equidigital number, since it uses as much as digits as its factorization.

22791427 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14112, while the sum is 34.

The square root of 22791427 is about 4774.0367614839. The cubic root of 22791427 is about 283.5244430005.

The spelling of 22791427 in words is "twenty-two million, seven hundred ninety-one thousand, four hundred twenty-seven".