20093869 has 2 divisors, whose sum is σ = 20093870. Its totient is φ = 20093868.

The previous prime is 20093867. The next prime is 20093873. The reversal of 20093869 is 96839002.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 18966025 + 1127844 = 4355^2 + 1062^2 .

It is a cyclic number.

It is not a de Polignac number, because 20093869 - 2¹ = 20093867 is a prime.

It is a super-2 number, since 2×20093869² = 807527142778322, which contains 22 as substring.

Together with 20093867, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20093867) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10046934 + 10046935.

It is an arithmetic number, because the mean of its divisors is an integer number (10046935).

Almost surely, 2^20093869 is an apocalyptic number.

It is an amenable number.

20093869 is a deficient number, since it is larger than the sum of its proper divisors (1).

20093869 is an equidigital number, since it uses as much as digits as its factorization.

20093869 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 23328, while the sum is 37.

The square root of 20093869 is about 4482.6185427716. The cubic root of 20093869 is about 271.8657651155.

The spelling of 20093869 in words is "twenty million, ninety-three thousand, eight hundred sixty-nine".