3387016821 has 4 divisors (see below), whose sum is σ = 4516022432. Its totient is φ = 2258011212.

The previous prime is 3387016771. The next prime is 3387016837. The reversal of 3387016821 is 1286107833.

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 de Polignac number, because none of the positive numbers 2^k-3387016821 is a prime.

It is a super-2 number, since 2×3387016821² = 22943765891473892082, which contains 22 as substring.

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 3387016821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3387016121) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 564502801 + ... + 564502806.

It is an arithmetic number, because the mean of its divisors is an integer number (1129005608).

Almost surely, 2^3387016821 is an apocalyptic number.

It is an amenable number.

3387016821 is a deficient number, since it is larger than the sum of its proper divisors (1129005611).

3387016821 is a wasteful number, since it uses less digits than its factorization.

3387016821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1129005610.

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

The square root of 3387016821 is about 58198.0826230555. The cubic root of 3387016821 is about 1501.7781610404.

The spelling of 3387016821 in words is "three billion, three hundred eighty-seven million, sixteen thousand, eight hundred twenty-one".