3896805872 has 40 divisors (see below), whose sum is σ = 7603764816. Its totient is φ = 1934585856.

The previous prime is 3896805839. The next prime is 3896805883. The reversal of 3896805872 is 2785086983.

It is a congruent number.

It is an unprimeable number.

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, 2336783 + ... + 2338449.

Almost surely, 2^3896805872 is an apocalyptic number.

It is an amenable number.

3896805872 is a deficient number, since it is larger than the sum of its proper divisors (3706958944).

3896805872 is a wasteful number, since it uses less digits than its factorization.

3896805872 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2625 (or 2619 counting only the distinct ones).

The product of its (nonzero) digits is 5806080, while the sum is 56.

The square root of 3896805872 is about 62424.4012546376. The cubic root of 3896805872 is about 1573.6310768656.

The spelling of 3896805872 in words is "three billion, eight hundred ninety-six million, eight hundred five thousand, eight hundred seventy-two".