3980191 has 2 divisors, whose sum is σ = 3980192. Its totient is φ = 3980190.

The previous prime is 3980161. The next prime is 3980203. The reversal of 3980191 is 1910893.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3980191 is a prime.

It is equal to p₂₈₁₈₈₄ and since 3980191 and 281884 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3980161) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1990095 + 1990096.

It is an arithmetic number, because the mean of its divisors is an integer number (1990096).

Almost surely, 2^3980191 is an apocalyptic number.

3980191 is a deficient number, since it is larger than the sum of its proper divisors (1).

3980191 is an equidigital number, since it uses as much as digits as its factorization.

3980191 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1944, while the sum is 31.

The square root of 3980191 is about 1995.0416035762. The cubic root of 3980191 is about 158.4776312112.

The spelling of 3980191 in words is "three million, nine hundred eighty thousand, one hundred ninety-one".