20380799 has 2 divisors, whose sum is σ = 20380800. Its totient is φ = 20380798.

The previous prime is 20380777. The next prime is 20380831. The reversal of 20380799 is 99708302.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 20380799 - 2⁸ = 20380543 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20380769) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10190399 + 10190400.

It is an arithmetic number, because the mean of its divisors is an integer number (10190400).

Almost surely, 2^20380799 is an apocalyptic number.

20380799 is a deficient number, since it is larger than the sum of its proper divisors (1).

20380799 is an equidigital number, since it uses as much as digits as its factorization.

20380799 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27216, while the sum is 38.

The square root of 20380799 is about 4514.5098294278. The cubic root of 20380799 is about 273.1536880569.

The spelling of 20380799 in words is "twenty million, three hundred eighty thousand, seven hundred ninety-nine".