3840045 has 48 divisors (see below), whose sum is σ = 7293888. Its totient is φ = 1704960.

The previous prime is 3840043. The next prime is 3840059. The reversal of 3840045 is 5400483.

It is a happy number.

3840045 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 3840045 - 2¹ = 3840043 is a prime.

3840045 is a lucky number.

It is a junction number, because it is equal to n+sod(n) for n = 3839997 and 3840024.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840043) by changing a digit.

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 47 ways as a sum of consecutive naturals, for example, 103767 + ... + 103803.

It is an arithmetic number, because the mean of its divisors is an integer number (151956).

Almost surely, 2^3840045 is an apocalyptic number.

It is an amenable number.

3840045 is a deficient number, since it is larger than the sum of its proper divisors (3453843).

3840045 is a wasteful number, since it uses less digits than its factorization.

3840045 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 110 (or 73 counting only the distinct ones).

The product of its (nonzero) digits is 1920, while the sum is 24.

The square root of 3840045 is about 1959.6032761761. The cubic root of 3840045 is about 156.5953173424.

It can be divided in two parts, 38400 and 45, that multiplied together give a cube (1728000 = 120³).

The spelling of 3840045 in words is "three million, eight hundred forty thousand, forty-five".