3828905 has 4 divisors (see below), whose sum is σ = 4594692. Its totient is φ = 3063120.

The previous prime is 3828901. The next prime is 3828917. The reversal of 3828905 is 5098283.

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

It can be written as a sum of positive squares in 2 ways, for example, as 1968409 + 1860496 = 1403^2 + 1364^2 .

It is not a de Polignac number, because 3828905 - 2² = 3828901 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (3828901) 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, 382886 + ... + 382895.

It is an arithmetic number, because the mean of its divisors is an integer number (1148673).

Almost surely, 2^3828905 is an apocalyptic number.

It is an amenable number.

3828905 is a deficient number, since it is larger than the sum of its proper divisors (765787).

3828905 is an equidigital number, since it uses as much as digits as its factorization.

3828905 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 765786.

The product of its (nonzero) digits is 17280, while the sum is 35.

The square root of 3828905 is about 1956.7587996480. The cubic root of 3828905 is about 156.4437426024.

The spelling of 3828905 in words is "three million, eight hundred twenty-eight thousand, nine hundred five".