3976181 has 12 divisors (see below), whose sum is σ = 4629996. Its totient is φ = 3400320.

The previous prime is 3976177. The next prime is 3976183. The reversal of 3976181 is 1816793.

It can be written as a sum of positive squares in 2 ways, for example, as 2907025 + 1069156 = 1705^2 + 1034^2 .

It is not a de Polignac number, because 3976181 - 2² = 3976177 is a prime.

It is a super-2 number, since 2×3976181² = 31620030689522, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3976183) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1091 + ... + 3023.

It is an arithmetic number, because the mean of its divisors is an integer number (385833).

Almost surely, 2^3976181 is an apocalyptic number.

It is an amenable number.

3976181 is a deficient number, since it is larger than the sum of its proper divisors (653815).

3976181 is a wasteful number, since it uses less digits than its factorization.

3976181 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1972 (or 1961 counting only the distinct ones).

The product of its digits is 9072, while the sum is 35.

The square root of 3976181 is about 1994.0363587457. The cubic root of 3976181 is about 158.4243918199.

The spelling of 3976181 in words is "three million, nine hundred seventy-six thousand, one hundred eighty-one".