3843913 has 2 divisors, whose sum is σ = 3843914. Its totient is φ = 3843912.

The previous prime is 3843883. The next prime is 3843919. The reversal of 3843913 is 3193483.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2778889 + 1065024 = 1667^2 + 1032^2 .

It is an emirp because it is prime and its reverse (3193483) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3843913 - 2⁵ = 3843881 is a prime.

It is not a weakly prime, because it can be changed into another prime (3843919) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1921956 + 1921957.

It is an arithmetic number, because the mean of its divisors is an integer number (1921957).

Almost surely, 2^3843913 is an apocalyptic number.

It is an amenable number.

3843913 is a deficient number, since it is larger than the sum of its proper divisors (1).

3843913 is an equidigital number, since it uses as much as digits as its factorization.

3843913 is an evil number, because the sum of its binary digits is even.

The product of its digits is 7776, while the sum is 31.

The square root of 3843913 is about 1960.5899622308. The cubic root of 3843913 is about 156.6478781352.

The spelling of 3843913 in words is "three million, eight hundred forty-three thousand, nine hundred thirteen".