3279981 has 4 divisors (see below), whose sum is σ = 4373312. Its totient is φ = 2186652.

The previous prime is 3279977. The next prime is 3280003. The reversal of 3279981 is 1899723.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 3279981 - 2² = 3279977 is a prime.

It is a super-2 number, since 2×3279981² = 21516550720722, which contains 22 as substring.

It is a D-number.

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 (3279281) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 546661 + ... + 546666.

It is an arithmetic number, because the mean of its divisors is an integer number (1093328).

Almost surely, 2^3279981 is an apocalyptic number.

It is an amenable number.

3279981 is a deficient number, since it is larger than the sum of its proper divisors (1093331).

3279981 is a wasteful number, since it uses less digits than its factorization.

3279981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1093330.

The product of its digits is 27216, while the sum is 39.

The square root of 3279981 is about 1811.0717821224. The cubic root of 3279981 is about 148.5788899377.

The spelling of 3279981 in words is "three million, two hundred seventy-nine thousand, nine hundred eighty-one".