3096985721 has 4 divisors (see below), whose sum is σ = 3097169232. Its totient is φ = 3096802212.

The previous prime is 3096985691. The next prime is 3096985739. The reversal of 3096985721 is 1275896903.

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 not a de Polignac number, because 3096985721 - 2¹⁰ = 3096984697 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 3096985721.

It is not an unprimeable number, because it can be changed into a prime (3096985741) 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, 63551 + ... + 101156.

It is an arithmetic number, because the mean of its divisors is an integer number (774292308).

Almost surely, 2^3096985721 is an apocalyptic number.

It is an amenable number.

3096985721 is a deficient number, since it is larger than the sum of its proper divisors (183511).

3096985721 is a wasteful number, since it uses less digits than its factorization.

3096985721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 183510.

The product of its (nonzero) digits is 816480, while the sum is 50.

The square root of 3096985721 is about 55650.5680204614. The cubic root of 3096985721 is about 1457.6269890835.

The spelling of 3096985721 in words is "three billion, ninety-six million, nine hundred eighty-five thousand, seven hundred twenty-one".