3239987 has 4 divisors (see below), whose sum is σ = 3380880. Its totient is φ = 3099096.

The previous prime is 3239983. The next prime is 3239989. The reversal of 3239987 is 7899323.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 7899323 = 317 ⋅24919.

It is a cyclic number.

It is not a de Polignac number, because 3239987 - 2² = 3239983 is a prime.

It is a Duffinian 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, 70412 + ... + 70457.

It is an arithmetic number, because the mean of its divisors is an integer number (845220).

Almost surely, 2^3239987 is an apocalyptic number.

3239987 is a deficient number, since it is larger than the sum of its proper divisors (140893).

3239987 is a wasteful number, since it uses less digits than its factorization.

3239987 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140892.

The product of its digits is 81648, while the sum is 41.

The square root of 3239987 is about 1799.9963888853. The cubic root of 3239987 is about 147.9725265537.

The spelling of 3239987 in words is "three million, two hundred thirty-nine thousand, nine hundred eighty-seven".