22003973 has 2 divisors, whose sum is σ = 22003974. Its totient is φ = 22003972.

The previous prime is 22003963. The next prime is 22003979. The reversal of 22003973 is 37930022.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16467364 + 5536609 = 4058^2 + 2353^2 .

It is a cyclic number.

It is not a de Polignac number, because 22003973 - 2⁶ = 22003909 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22003979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11001986 + 11001987.

It is an arithmetic number, because the mean of its divisors is an integer number (11001987).

Almost surely, 2^22003973 is an apocalyptic number.

It is an amenable number.

22003973 is a deficient number, since it is larger than the sum of its proper divisors (1).

22003973 is an equidigital number, since it uses as much as digits as its factorization.

22003973 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2268, while the sum is 26.

The square root of 22003973 is about 4690.8392639271. The cubic root of 22003973 is about 280.2207994779.

Adding to 22003973 its reverse (37930022), we get a palindrome (59933995).

The spelling of 22003973 in words is "twenty-two million, three thousand, nine hundred seventy-three".