3886745 has 4 divisors (see below), whose sum is σ = 4664100. Its totient is φ = 3109392.

The previous prime is 3886741. The next prime is 3886769. The reversal of 3886745 is 5476883.

Added to its reverse (5476883) it gives a triangular number (9363628 = T₄₃₂₇).

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 5476883 = 19 ⋅288257.

It can be written as a sum of positive squares in 2 ways, for example, as 2550409 + 1336336 = 1597^2 + 1156^2 .

It is a cyclic number.

It is not a de Polignac number, because 3886745 - 2² = 3886741 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3886741) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 388670 + ... + 388679.

It is an arithmetic number, because the mean of its divisors is an integer number (1166025).

Almost surely, 2^3886745 is an apocalyptic number.

It is an amenable number.

3886745 is a deficient number, since it is larger than the sum of its proper divisors (777355).

3886745 is an equidigital number, since it uses as much as digits as its factorization.

3886745 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 777354.

The product of its digits is 161280, while the sum is 41.

The square root of 3886745 is about 1971.4829443848. The cubic root of 3886745 is about 157.2275629509.

Adding to 3886745 its reverse (5476883), we get a triangular number (9363628 = T₄₃₂₇).

The spelling of 3886745 in words is "three million, eight hundred eighty-six thousand, seven hundred forty-five".