3229418721 has 4 divisors (see below), whose sum is σ = 4305891632. Its totient is φ = 2152945812.

The previous prime is 3229418701. The next prime is 3229418747. The reversal of 3229418721 is 1278149223.

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 3229418721 - 2⁷ = 3229418593 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 3229418721.

It is not an unprimeable number, because it can be changed into a prime (3229418701) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 538236451 + ... + 538236456.

It is an arithmetic number, because the mean of its divisors is an integer number (1076472908).

Almost surely, 2^3229418721 is an apocalyptic number.

It is an amenable number.

3229418721 is a deficient number, since it is larger than the sum of its proper divisors (1076472911).

3229418721 is a wasteful number, since it uses less digits than its factorization.

3229418721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1076472910.

The product of its digits is 48384, while the sum is 39.

The square root of 3229418721 is about 56827.9748099473. The cubic root of 3229418721 is about 1478.1146435072.

It can be divided in two parts, 32294 and 18721, that added together give a palindrome (51015).

The spelling of 3229418721 in words is "three billion, two hundred twenty-nine million, four hundred eighteen thousand, seven hundred twenty-one".