3840445 has 16 divisors (see below), whose sum is σ = 5304960. Its totient is φ = 2614464.

The previous prime is 3840409. The next prime is 3840449. The reversal of 3840445 is 5440483.

It is a cyclic number.

It is not a de Polignac number, because 3840445 - 2¹¹ = 3838397 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3840449) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 5959 + ... + 6571.

It is an arithmetic number, because the mean of its divisors is an integer number (331560).

Almost surely, 2^3840445 is an apocalyptic number.

3840445 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3840445 is a deficient number, since it is larger than the sum of its proper divisors (1464515).

3840445 is a wasteful number, since it uses less digits than its factorization.

3840445 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 804.

The product of its (nonzero) digits is 7680, while the sum is 28.

The square root of 3840445 is about 1959.7053349930. The cubic root of 3840445 is about 156.6007544273.

The spelling of 3840445 in words is "three million, eight hundred forty thousand, four hundred forty-five".