20414917 has 2 divisors, whose sum is σ = 20414918. Its totient is φ = 20414916.

The previous prime is 20414903. The next prime is 20414923. The reversal of 20414917 is 71941402.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12383361 + 8031556 = 3519^2 + 2834^2 .

It is a cyclic number.

It is not a de Polignac number, because 20414917 - 2⁷ = 20414789 is a prime.

It is a super-2 number, since 2×20414917² = 833537672233778, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (20414117) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10207458 + 10207459.

It is an arithmetic number, because the mean of its divisors is an integer number (10207459).

Almost surely, 2^20414917 is an apocalyptic number.

It is an amenable number.

20414917 is a deficient number, since it is larger than the sum of its proper divisors (1).

20414917 is an equidigital number, since it uses as much as digits as its factorization.

20414917 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2016, while the sum is 28.

The square root of 20414917 is about 4518.2869541453. The cubic root of 20414917 is about 273.3060252644.

The spelling of 20414917 in words is "twenty million, four hundred fourteen thousand, nine hundred seventeen".