3284288921 has 4 divisors (see below), whose sum is σ = 3284491392. Its totient is φ = 3284086452.

The previous prime is 3284288899. The next prime is 3284288929. The reversal of 3284288921 is 1298824823.

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 a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3284288921 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3284288929) 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, 74561 + ... + 110126.

It is an arithmetic number, because the mean of its divisors is an integer number (821122848).

Almost surely, 2^3284288921 is an apocalyptic number.

It is an amenable number.

3284288921 is a deficient number, since it is larger than the sum of its proper divisors (202471).

3284288921 is a wasteful number, since it uses less digits than its factorization.

3284288921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 202470.

The product of its digits is 442368, while the sum is 47.

The square root of 3284288921 is about 57308.7159252412. The cubic root of 3284288921 is about 1486.4390922732.

The spelling of 3284288921 in words is "three billion, two hundred eighty-four million, two hundred eighty-eight thousand, nine hundred twenty-one".