3995161 has 2 divisors, whose sum is σ = 3995162. Its totient is φ = 3995160.

The previous prime is 3995129. The next prime is 3995183. The reversal of 3995161 is 1615993.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3240000 + 755161 = 1800^2 + 869^2 .

It is a cyclic number.

It is not a de Polignac number, because 3995161 - 2⁵ = 3995129 is a prime.

It is a super-2 number, since 2×3995161² = 31922622831842, which contains 22 as substring.

3995161 is a lucky number.

It is not a weakly prime, because it can be changed into another prime (3995191) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1997580 + 1997581.

It is an arithmetic number, because the mean of its divisors is an integer number (1997581).

Almost surely, 2^3995161 is an apocalyptic number.

It is an amenable number.

3995161 is a deficient number, since it is larger than the sum of its proper divisors (1).

3995161 is an equidigital number, since it uses as much as digits as its factorization.

3995161 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7290, while the sum is 34.

The square root of 3995161 is about 1998.7898839048. The cubic root of 3995161 is about 158.6760674192.

The spelling of 3995161 in words is "three million, nine hundred ninety-five thousand, one hundred sixty-one".