22409437 has 2 divisors, whose sum is σ = 22409438. Its totient is φ = 22409436.

The previous prime is 22409393. The next prime is 22409461. The reversal of 22409437 is 73490422.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20304036 + 2105401 = 4506^2 + 1451^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-22409437 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 22409399 and 22409408.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22409477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11204718 + 11204719.

It is an arithmetic number, because the mean of its divisors is an integer number (11204719).

Almost surely, 2^22409437 is an apocalyptic number.

It is an amenable number.

22409437 is a deficient number, since it is larger than the sum of its proper divisors (1).

22409437 is an equidigital number, since it uses as much as digits as its factorization.

22409437 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 12096, while the sum is 31.

The square root of 22409437 is about 4733.8606865855. The cubic root of 22409437 is about 281.9315302474.

Adding to 22409437 its reverse (73490422), we get a palindrome (95899859).

The spelling of 22409437 in words is "twenty-two million, four hundred nine thousand, four hundred thirty-seven".