3899941 has 2 divisors, whose sum is σ = 3899942. Its totient is φ = 3899940.

The previous prime is 3899927. The next prime is 3899947. The reversal of 3899941 is 1499983.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2090916 + 1809025 = 1446^2 + 1345^2 .

It is a cyclic number.

It is not a de Polignac number, because 3899941 - 2⁷ = 3899813 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3899947) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1949970 + 1949971.

It is an arithmetic number, because the mean of its divisors is an integer number (1949971).

Almost surely, 2^3899941 is an apocalyptic number.

It is an amenable number.

3899941 is a deficient number, since it is larger than the sum of its proper divisors (1).

3899941 is an equidigital number, since it uses as much as digits as its factorization.

3899941 is an evil number, because the sum of its binary digits is even.

The product of its digits is 69984, while the sum is 43.

The square root of 3899941 is about 1974.8268278510. The cubic root of 3899941 is about 157.4052979019.

The spelling of 3899941 in words is "three million, eight hundred ninety-nine thousand, nine hundred forty-one".