4090913 has 2 divisors, whose sum is σ = 4090914. Its totient is φ = 4090912.

The previous prime is 4090907. The next prime is 4090921. The reversal of 4090913 is 3190904.

It is a happy number.

4090913 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2408704 + 1682209 = 1552^2 + 1297^2 .

It is a cyclic number.

It is not a de Polignac number, because 4090913 - 2¹⁰ = 4089889 is a prime.

It is not a weakly prime, because it can be changed into another prime (4090903) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2045456 + 2045457.

It is an arithmetic number, because the mean of its divisors is an integer number (2045457).

Almost surely, 2^4090913 is an apocalyptic number.

It is an amenable number.

4090913 is a deficient number, since it is larger than the sum of its proper divisors (1).

4090913 is an equidigital number, since it uses as much as digits as its factorization.

4090913 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 972, while the sum is 26.

The square root of 4090913 is about 2022.6005537426. The cubic root of 4090913 is about 159.9337355810.

Subtracting from 4090913 its reverse (3190904), we obtain a palindrome (900009).

The spelling of 4090913 in words is "four million, ninety thousand, nine hundred thirteen".