4047385 has 16 divisors (see below), whose sum is σ = 5091840. Its totient is φ = 3084480.

The previous prime is 4047383. The next prime is 4047409. The reversal of 4047385 is 5837404.

4047385 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 4047385 - 2¹ = 4047383 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4047383) 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 15 ways as a sum of consecutive naturals, for example, 14800 + ... + 15070.

It is an arithmetic number, because the mean of its divisors is an integer number (318240).

Almost surely, 2^4047385 is an apocalyptic number.

It is an amenable number.

4047385 is a deficient number, since it is larger than the sum of its proper divisors (1044455).

4047385 is a wasteful number, since it uses less digits than its factorization.

4047385 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 408.

The product of its (nonzero) digits is 13440, while the sum is 31.

The square root of 4047385 is about 2011.8113728677. The cubic root of 4047385 is about 159.3644711742.

The spelling of 4047385 in words is "four million, forty-seven thousand, three hundred eighty-five".