22943539 has 2 divisors, whose sum is σ = 22943540. Its totient is φ = 22943538.

The previous prime is 22943537. The next prime is 22943551. The reversal of 22943539 is 93534922.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22943539 - 2¹ = 22943537 is a prime.

Together with 22943537, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22943498 and 22943507.

It is not a weakly prime, because it can be changed into another prime (22943537) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11471769 + 11471770.

It is an arithmetic number, because the mean of its divisors is an integer number (11471770).

Almost surely, 2^22943539 is an apocalyptic number.

22943539 is a deficient number, since it is larger than the sum of its proper divisors (1).

22943539 is an equidigital number, since it uses as much as digits as its factorization.

22943539 is an evil number, because the sum of its binary digits is even.

The product of its digits is 58320, while the sum is 37.

The square root of 22943539 is about 4789.9414401431. The cubic root of 22943539 is about 284.1538006786.

The spelling of 22943539 in words is "twenty-two million, nine hundred forty-three thousand, five hundred thirty-nine".