3785679821 has 8 divisors (see below), whose sum is σ = 4719808704. Its totient is φ = 2949880320.

The previous prime is 3785679811. The next prime is 3785679823. The reversal of 3785679821 is 1289765873.

3785679821 is digitally balanced in base 3, because in such base it contains all the possibile digits an equal number of times.

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 3785679821 - 2¹⁰ = 3785678797 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3785679823) 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 7 ways as a sum of consecutive naturals, for example, 24582260 + ... + 24582413.

It is an arithmetic number, because the mean of its divisors is an integer number (589976088).

Almost surely, 2^3785679821 is an apocalyptic number.

It is an amenable number.

3785679821 is a deficient number, since it is larger than the sum of its proper divisors (934128883).

3785679821 is a wasteful number, since it uses less digits than its factorization.

3785679821 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49164691.

The product of its digits is 5080320, while the sum is 56.

The square root of 3785679821 is about 61527.8784048337. The cubic root of 3785679821 is about 1558.5280632961.

The spelling of 3785679821 in words is "three billion, seven hundred eighty-five million, six hundred seventy-nine thousand, eight hundred twenty-one".