3021039721 has 8 divisors (see below), whose sum is σ = 3454064640. Its totient is φ = 2588376768.

The previous prime is 3021039713. The next prime is 3021039733. The reversal of 3021039721 is 1279301203.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 3021039721 - 2³ = 3021039713 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 3021039721.

It is not an unprimeable number, because it can be changed into a prime (3021039781) 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 7 ways as a sum of consecutive naturals, for example, 72361 + ... + 106198.

It is an arithmetic number, because the mean of its divisors is an integer number (431758080).

Almost surely, 2^3021039721 is an apocalyptic number.

It is an amenable number.

3021039721 is a deficient number, since it is larger than the sum of its proper divisors (433024919).

3021039721 is a wasteful number, since it uses less digits than its factorization.

3021039721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 180983.

The product of its (nonzero) digits is 2268, while the sum is 28.

The square root of 3021039721 is about 54963.9856724383. The cubic root of 3021039721 is about 1445.6133331800.

The spelling of 3021039721 in words is "three billion, twenty-one million, thirty-nine thousand, seven hundred twenty-one".