20366449 has 2 divisors, whose sum is σ = 20366450. Its totient is φ = 20366448.

The previous prime is 20366443. The next prime is 20366453. The reversal of 20366449 is 94466302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18766224 + 1600225 = 4332^2 + 1265^2 .

It is a cyclic number.

It is not a de Polignac number, because 20366449 - 2¹¹ = 20364401 is a prime.

It is not a weakly prime, because it can be changed into another prime (20366443) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10183224 + 10183225.

It is an arithmetic number, because the mean of its divisors is an integer number (10183225).

Almost surely, 2^20366449 is an apocalyptic number.

It is an amenable number.

20366449 is a deficient number, since it is larger than the sum of its proper divisors (1).

20366449 is an equidigital number, since it uses as much as digits as its factorization.

20366449 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 31104, while the sum is 34.

The square root of 20366449 is about 4512.9202297404. The cubic root of 20366449 is about 273.0895643729.

The spelling of 20366449 in words is "twenty million, three hundred sixty-six thousand, four hundred forty-nine".