3856659690244 has 9 divisors (see below), whose sum is σ = 6749161331367. Its totient is φ = 1928327881284.

The previous prime is 3856659690229. The next prime is 3856659690311. The reversal of 3856659690244 is 4420969566583.

The square root of 3856659690244 is 1963838.

It is a perfect power (a square), and thus also a powerful number.

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 3856659690244.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 2 ways as a sum of consecutive naturals, for example, 3436717 + ... + 4418635.

Almost surely, 2^{3856659690244} is an apocalyptic number.

3856659690244 is the 1963838-th square number.

It is an amenable number.

3856659690244 is a deficient number, since it is larger than the sum of its proper divisors (2892501641123).

3856659690244 is an frugal number, since it uses more digits than its factorization.

3856659690244 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1963842 (or 981921 counting only the distinct ones).

The product of its (nonzero) digits is 335923200, while the sum is 67.

The spelling of 3856659690244 in words is "three trillion, eight hundred fifty-six billion, six hundred fifty-nine million, six hundred ninety thousand, two hundred forty-four".