3786905 has 4 divisors (see below), whose sum is σ = 4544292. Its totient is φ = 3029520.

The previous prime is 3786899. The next prime is 3786919. The reversal of 3786905 is 5096873.

3786905 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

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 1008016 + 2778889 = 1004^2 + 1667^2 .

It is a de Polignac number, because none of the positive numbers 2^k-3786905 is a prime.

It is an Ulam number.

It is a Duffinian number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 378686 + ... + 378695.

It is an arithmetic number, because the mean of its divisors is an integer number (1136073).

Almost surely, 2^3786905 is an apocalyptic number.

It is an amenable number.

3786905 is a deficient number, since it is larger than the sum of its proper divisors (757387).

3786905 is an equidigital number, since it uses as much as digits as its factorization.

3786905 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 757386.

The product of its (nonzero) digits is 45360, while the sum is 38.

The square root of 3786905 is about 1945.9971736876. The cubic root of 3786905 is about 155.8696176642.

The spelling of 3786905 in words is "three million, seven hundred eighty-six thousand, nine hundred five".