2030909 has 2 divisors, whose sum is σ = 2030910. Its totient is φ = 2030908.

The previous prime is 2030881. The next prime is 2030911. The reversal of 2030909 is 9090302.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1968409 + 62500 = 1403^2 + 250^2 .

It is a cyclic number.

It is not a de Polignac number, because 2030909 - 2⁸ = 2030653 is a prime.

Together with 2030911, it forms a pair of twin primes.

It is a Chen prime.

2030909 is a modest number, since divided by 909 gives 203 as remainder.

It is equal to p₁₅₁₀₇₉ and since 2030909 and 151079 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (2030999) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1015454 + 1015455.

It is an arithmetic number, because the mean of its divisors is an integer number (1015455).

2^2030909 is an apocalyptic number.

It is an amenable number.

2030909 is a deficient number, since it is larger than the sum of its proper divisors (1).

2030909 is an equidigital number, since it uses as much as digits as its factorization.

2030909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 486, while the sum is 23.

The square root of 2030909 is about 1425.0996456389. The cubic root of 2030909 is about 126.6378381608.

The spelling of 2030909 in words is "two million, thirty thousand, nine hundred nine".