3895981 has 2 divisors, whose sum is σ = 3895982. Its totient is φ = 3895980.

The previous prime is 3895967. The next prime is 3895999. The reversal of 3895981 is 1895983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 3031081 + 864900 = 1741^2 + 930^2 .

It is a cyclic number.

It is not a de Polignac number, because 3895981 - 2⁵ = 3895949 is a prime.

It is a super-2 number, since 2×3895981² = 30357335904722, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3895921) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1947990 + 1947991.

It is an arithmetic number, because the mean of its divisors is an integer number (1947991).

Almost surely, 2^3895981 is an apocalyptic number.

It is an amenable number.

3895981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3895981 is an equidigital number, since it uses as much as digits as its factorization.

3895981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 77760, while the sum is 43.

The square root of 3895981 is about 1973.8239536494. The cubic root of 3895981 is about 157.3520034142.

The spelling of 3895981 in words is "three million, eight hundred ninety-five thousand, nine hundred eighty-one".