3929866 has 8 divisors (see below), whose sum is σ = 5925924. Its totient is φ = 1954560.

The previous prime is 3929857. The next prime is 3929879. The reversal of 3929866 is 6689293.

It can be written as a sum of positive squares in 2 ways, for example, as 3900625 + 29241 = 1975^2 + 171^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4705 + ... + 5476.

Almost surely, 2^3929866 is an apocalyptic number.

3929866 is a deficient number, since it is larger than the sum of its proper divisors (1996058).

3929866 is a wasteful number, since it uses less digits than its factorization.

3929866 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10376.

The product of its digits is 139968, while the sum is 43.

The square root of 3929866 is about 1982.3889628426. The cubic root of 3929866 is about 157.8068729360.

The spelling of 3929866 in words is "three million, nine hundred twenty-nine thousand, eight hundred sixty-six".