3979181 has 2 divisors, whose sum is σ = 3979182. Its totient is φ = 3979180.

The previous prime is 3979163. The next prime is 3979193. The reversal of 3979181 is 1819793.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 2788900 + 1190281 = 1670^2 + 1091^2 .

It is a cyclic number.

It is not a de Polignac number, because 3979181 - 2⁶ = 3979117 is a prime.

It is a super-2 number, since 2×3979181² = 31667762861522, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3979141) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1989590 + 1989591.

It is an arithmetic number, because the mean of its divisors is an integer number (1989591).

Almost surely, 2^3979181 is an apocalyptic number.

It is an amenable number.

3979181 is a deficient number, since it is larger than the sum of its proper divisors (1).

3979181 is an equidigital number, since it uses as much as digits as its factorization.

3979181 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 13608, while the sum is 38.

The square root of 3979181 is about 1994.7884599626. The cubic root of 3979181 is about 158.4642251587.

The spelling of 3979181 in words is "three million, nine hundred seventy-nine thousand, one hundred eighty-one".