3820823 has 4 divisors (see below), whose sum is σ = 3892968. Its totient is φ = 3748680.

The previous prime is 3820813. The next prime is 3820841. The reversal of 3820823 is 3280283.

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

It is a cyclic number.

It is not a de Polignac number, because 3820823 - 2⁶ = 3820759 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 3820792 and 3820801.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3820813) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 35993 + ... + 36098.

It is an arithmetic number, because the mean of its divisors is an integer number (973242).

Almost surely, 2^3820823 is an apocalyptic number.

3820823 is a deficient number, since it is larger than the sum of its proper divisors (72145).

3820823 is an equidigital number, since it uses as much as digits as its factorization.

3820823 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 72144.

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 3820823 is about 1954.6925589463. The cubic root of 3820823 is about 156.3335919646. Note that the first 3 decimals are identical.

The spelling of 3820823 in words is "three million, eight hundred twenty thousand, eight hundred twenty-three".