22308149 has 2 divisors, whose sum is σ = 22308150. Its totient is φ = 22308148.

The previous prime is 22308133. The next prime is 22308161. The reversal of 22308149 is 94180322.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 20884900 + 1423249 = 4570^2 + 1193^2 .

It is a cyclic number.

It is not a de Polignac number, because 22308149 - 2⁴ = 22308133 is a prime.

It is a super-3 number, since 3×22308149³ (a number of 23 digits) contains 333 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22308179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11154074 + 11154075.

It is an arithmetic number, because the mean of its divisors is an integer number (11154075).

Almost surely, 2^22308149 is an apocalyptic number.

It is an amenable number.

22308149 is a deficient number, since it is larger than the sum of its proper divisors (1).

22308149 is an equidigital number, since it uses as much as digits as its factorization.

22308149 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 22308149 is about 4723.1503257889. The cubic root of 22308149 is about 281.5061229682.

The spelling of 22308149 in words is "twenty-two million, three hundred eight thousand, one hundred forty-nine".