3856634 has 4 divisors (see below), whose sum is σ = 5784954. Its totient is φ = 1928316.

The previous prime is 3856631. The next prime is 3856661. The reversal of 3856634 is 4366583.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 3621409 + 235225 = 1903^2 + 485^2 .

It is a junction number, because it is equal to n+sod(n) for n = 3856594 and 3856603.

It is not an unprimeable number, because it can be changed into a prime (3856631) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 964157 + ... + 964160.

Almost surely, 2^3856634 is an apocalyptic number.

3856634 is a deficient number, since it is larger than the sum of its proper divisors (1928320).

3856634 is a wasteful number, since it uses less digits than its factorization.

3856634 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1928319.

The product of its digits is 51840, while the sum is 35.

The square root of 3856634 is about 1963.8314591634. The cubic root of 3856634 is about 156.8204907363.

The spelling of 3856634 in words is "three million, eight hundred fifty-six thousand, six hundred thirty-four".