4090901 has 2 divisors, whose sum is σ = 4090902. Its totient is φ = 4090900.

The previous prime is 4090861. The next prime is 4090903. The reversal of 4090901 is 1090904.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2172676 + 1918225 = 1474^2 + 1385^2 .

It is a cyclic number.

It is not a de Polignac number, because 4090901 - 2⁶ = 4090837 is a prime.

Together with 4090903, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2045450 + 2045451.

It is an arithmetic number, because the mean of its divisors is an integer number (2045451).

Almost surely, 2^4090901 is an apocalyptic number.

It is an amenable number.

4090901 is a deficient number, since it is larger than the sum of its proper divisors (1).

4090901 is an equidigital number, since it uses as much as digits as its factorization.

4090901 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 23.

The square root of 4090901 is about 2022.5975872625. The cubic root of 4090901 is about 159.9335792014.

The spelling of 4090901 in words is "four million, ninety thousand, nine hundred one".