22403149 has 2 divisors, whose sum is σ = 22403150. Its totient is φ = 22403148.

The previous prime is 22403141. The next prime is 22403159. The reversal of 22403149 is 94130422.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 15015625 + 7387524 = 3875^2 + 2718^2 .

It is a cyclic number.

It is not a de Polignac number, because 22403149 - 2³ = 22403141 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22403141) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11201574 + 11201575.

It is an arithmetic number, because the mean of its divisors is an integer number (11201575).

Almost surely, 2^22403149 is an apocalyptic number.

It is an amenable number.

22403149 is a deficient number, since it is larger than the sum of its proper divisors (1).

22403149 is an equidigital number, since it uses as much as digits as its factorization.

22403149 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1728, while the sum is 25.

The square root of 22403149 is about 4733.1964886322. The cubic root of 22403149 is about 281.9051581539.

The spelling of 22403149 in words is "twenty-two million, four hundred three thousand, one hundred forty-nine".