22946639 has 2 divisors, whose sum is σ = 22946640. Its totient is φ = 22946638.

The previous prime is 22946633. The next prime is 22946641. The reversal of 22946639 is 93664922.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22946639 is a prime.

Together with 22946641, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22946596 and 22946605.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22946633) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11473319 + 11473320.

It is an arithmetic number, because the mean of its divisors is an integer number (11473320).

Almost surely, 2^22946639 is an apocalyptic number.

22946639 is a deficient number, since it is larger than the sum of its proper divisors (1).

22946639 is an equidigital number, since it uses as much as digits as its factorization.

22946639 is an evil number, because the sum of its binary digits is even.

The product of its digits is 139968, while the sum is 41.

The square root of 22946639 is about 4790.2650239835. The cubic root of 22946639 is about 284.1665978487.

The spelling of 22946639 in words is "twenty-two million, nine hundred forty-six thousand, six hundred thirty-nine".