3980843 has 2 divisors, whose sum is σ = 3980844. Its totient is φ = 3980842.

The previous prime is 3980831. The next prime is 3980857. The reversal of 3980843 is 3480893.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 3980843 - 2⁴ = 3980827 is a prime.

It is a super-2 number, since 2×3980843² = 31694221981298, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (3980143) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1990421 + 1990422.

It is an arithmetic number, because the mean of its divisors is an integer number (1990422).

Almost surely, 2^3980843 is an apocalyptic number.

3980843 is a deficient number, since it is larger than the sum of its proper divisors (1).

3980843 is an equidigital number, since it uses as much as digits as its factorization.

3980843 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 3980843 is about 1995.2050019985. The cubic root of 3980843 is about 158.4862842109.

The spelling of 3980843 in words is "three million, nine hundred eighty thousand, eight hundred forty-three".