4093861 has 2 divisors, whose sum is σ = 4093862. Its totient is φ = 4093860.

The previous prime is 4093853. The next prime is 4093871. The reversal of 4093861 is 1683904.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 2117025 + 1976836 = 1455^2 + 1406^2 .

It is a cyclic number.

It is not a de Polignac number, because 4093861 - 2³ = 4093853 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4093801) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2046930 + 2046931.

It is an arithmetic number, because the mean of its divisors is an integer number (2046931).

Almost surely, 2^4093861 is an apocalyptic number.

It is an amenable number.

4093861 is a deficient number, since it is larger than the sum of its proper divisors (1).

4093861 is an equidigital number, since it uses as much as digits as its factorization.

4093861 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 4093861 is about 2023.3291872555. The cubic root of 4093861 is about 159.9721435879.

The spelling of 4093861 in words is "four million, ninety-three thousand, eight hundred sixty-one".