22405499 has 2 divisors, whose sum is σ = 22405500. Its totient is φ = 22405498.

The previous prime is 22405463. The next prime is 22405501. The reversal of 22405499 is 99450422.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 22405499 - 2¹⁶ = 22339963 is a prime.

Together with 22405501, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (22405459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11202749 + 11202750.

It is an arithmetic number, because the mean of its divisors is an integer number (11202750).

Almost surely, 2^22405499 is an apocalyptic number.

22405499 is a deficient number, since it is larger than the sum of its proper divisors (1).

22405499 is an equidigital number, since it uses as much as digits as its factorization.

22405499 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 22405499 is about 4733.4447287361. Note that the first 3 decimals coincide. The cubic root of 22405499 is about 281.9150147141.

The spelling of 22405499 in words is "twenty-two million, four hundred five thousand, four hundred ninety-nine".