22994143 has 2 divisors, whose sum is σ = 22994144. Its totient is φ = 22994142.

The previous prime is 22994117. The next prime is 22994159. The reversal of 22994143 is 34149922.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22994143 - 2²¹ = 20896991 is a prime.

It is a super-2 number, since 2×22994143² = 1057461224608898, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 22994099 and 22994108.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22994113) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11497071 + 11497072.

It is an arithmetic number, because the mean of its divisors is an integer number (11497072).

Almost surely, 2^22994143 is an apocalyptic number.

22994143 is a deficient number, since it is larger than the sum of its proper divisors (1).

22994143 is an equidigital number, since it uses as much as digits as its factorization.

22994143 is an evil number, because the sum of its binary digits is even.

The product of its digits is 15552, while the sum is 34.

The square root of 22994143 is about 4795.2208499714. The cubic root of 22994143 is about 284.3625560388.

The spelling of 22994143 in words is "twenty-two million, nine hundred ninety-four thousand, one hundred forty-three".