3290981 has 2 divisors, whose sum is σ = 3290982. Its totient is φ = 3290980.

The previous prime is 3290977. The next prime is 3290983. The reversal of 3290981 is 1890923.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3118756 + 172225 = 1766^2 + 415^2 .

It is an emirp because it is prime and its reverse (1890923) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 3290981 - 2² = 3290977 is a prime.

It is a super-2 number, since 2×3290981² = 21661111884722, which contains 22 as substring.

It is a Sophie Germain prime.

Together with 3290983, it forms a pair of twin primes.

It is a Chen prime.

It is an alternating number because its digits alternate between odd and even.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (3290983) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 1645490 + 1645491.

It is an arithmetic number, because the mean of its divisors is an integer number (1645491).

Almost surely, 2^3290981 is an apocalyptic number.

It is an amenable number.

3290981 is a deficient number, since it is larger than the sum of its proper divisors (1).

3290981 is an equidigital number, since it uses as much as digits as its factorization.

3290981 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3888, while the sum is 32.

The square root of 3290981 is about 1814.1061159701. The cubic root of 3290981 is about 148.7447998559.

The spelling of 3290981 in words is "three million, two hundred ninety thousand, nine hundred eighty-one".