3239981 has 4 divisors (see below), whose sum is σ = 3248700. Its totient is φ = 3231264.

The previous prime is 3239969. The next prime is 3239983. The reversal of 3239981 is 1899323.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 570025 + 2669956 = 755^2 + 1634^2 .

It is a cyclic number.

It is not a de Polignac number, because 3239981 - 2¹⁰ = 3238957 is a prime.

It is a super-2 number, since 2×3239981² = 20994953760722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3239983) 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, 3776 + ... + 4553.

It is an arithmetic number, because the mean of its divisors is an integer number (812175).

Almost surely, 2^3239981 is an apocalyptic number.

It is an amenable number.

3239981 is a deficient number, since it is larger than the sum of its proper divisors (8719).

3239981 is an equidigital number, since it uses as much as digits as its factorization.

3239981 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8718.

The product of its digits is 11664, while the sum is 35.

The square root of 3239981 is about 1799.9947222145. The cubic root of 3239981 is about 147.9724352122.

The spelling of 3239981 in words is "three million, two hundred thirty-nine thousand, nine hundred eighty-one".