3820817 has 24 divisors (see below), whose sum is σ = 5183808. Its totient is φ = 2740320.

The previous prime is 3820813. The next prime is 3820841. The reversal of 3820817 is 7180283.

It is not a de Polignac number, because 3820817 - 2² = 3820813 is a prime.

It is a Smith number, since the sum of its digits (29) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 3820817.

It is not an unprimeable number, because it can be changed into a prime (3820811) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 10838 + ... + 11184.

It is an arithmetic number, because the mean of its divisors is an integer number (215992).

Almost surely, 2^3820817 is an apocalyptic number.

It is an amenable number.

3820817 is a deficient number, since it is larger than the sum of its proper divisors (1362991).

3820817 is a wasteful number, since it uses less digits than its factorization.

3820817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 389 (or 378 counting only the distinct ones).

The product of its (nonzero) digits is 2688, while the sum is 29.

The square root of 3820817 is about 1954.6910241775. The cubic root of 3820817 is about 156.3335101322. Note that the first 3 decimals are identical.

The spelling of 3820817 in words is "three million, eight hundred twenty thousand, eight hundred seventeen".