3869545 has 4 divisors (see below), whose sum is σ = 4643460. Its totient is φ = 3095632.

The previous prime is 3869501. The next prime is 3869561. The reversal of 3869545 is 5459683.

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 2893401 + 976144 = 1701^2 + 988^2 .

It is a cyclic number.

It is not a de Polignac number, because 3869545 - 2⁷ = 3869417 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a junction number, because it is equal to n+sod(n) for n = 3869498 and 3869507.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 386950 + ... + 386959.

It is an arithmetic number, because the mean of its divisors is an integer number (1160865).

Almost surely, 2^3869545 is an apocalyptic number.

It is an amenable number.

3869545 is a deficient number, since it is larger than the sum of its proper divisors (773915).

3869545 is an equidigital number, since it uses as much as digits as its factorization.

3869545 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 773914.

The product of its digits is 129600, while the sum is 40.

The square root of 3869545 is about 1967.1159091421. The cubic root of 3869545 is about 156.9952937857.

The spelling of 3869545 in words is "three million, eight hundred sixty-nine thousand, five hundred forty-five".