20799269 has 2 divisors, whose sum is σ = 20799270. Its totient is φ = 20799268.

The previous prime is 20799257. The next prime is 20799287. The reversal of 20799269 is 96299702.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 12602500 + 8196769 = 3550^2 + 2863^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20799269 is a prime.

It is a super-2 number, since 2×20799269² = 865219181868722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20799209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10399634 + 10399635.

It is an arithmetic number, because the mean of its divisors is an integer number (10399635).

Almost surely, 2^20799269 is an apocalyptic number.

It is an amenable number.

20799269 is a deficient number, since it is larger than the sum of its proper divisors (1).

20799269 is an equidigital number, since it uses as much as digits as its factorization.

20799269 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 122472, while the sum is 44.

The square root of 20799269 is about 4560.6215585159. The cubic root of 20799269 is about 275.0105516612.

The spelling of 20799269 in words is "twenty million, seven hundred ninety-nine thousand, two hundred sixty-nine".