20914169 has 2 divisors, whose sum is σ = 20914170. Its totient is φ = 20914168.

The previous prime is 20914163. The next prime is 20914177. The reversal of 20914169 is 96141902.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 16096144 + 4818025 = 4012^2 + 2195^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-20914169 is a prime.

It is a super-2 number, since 2×20914169² = 874804929921122, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (20914163) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10457084 + 10457085.

It is an arithmetic number, because the mean of its divisors is an integer number (10457085).

Almost surely, 2^20914169 is an apocalyptic number.

It is an amenable number.

20914169 is a deficient number, since it is larger than the sum of its proper divisors (1).

20914169 is an equidigital number, since it uses as much as digits as its factorization.

20914169 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 20914169 is about 4573.2011764190. The cubic root of 20914169 is about 275.5160294274.

The spelling of 20914169 in words is "twenty million, nine hundred fourteen thousand, one hundred sixty-nine".