4028047 has 4 divisors (see below), whose sum is σ = 4158016. Its totient is φ = 3898080.

The previous prime is 4028009. The next prime is 4028069. The reversal of 4028047 is 7408204.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 4028047 - 2¹¹ = 4025999 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4028077) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 64938 + ... + 64999.

It is an arithmetic number, because the mean of its divisors is an integer number (1039504).

Almost surely, 2^4028047 is an apocalyptic number.

4028047 is a deficient number, since it is larger than the sum of its proper divisors (129969).

4028047 is a wasteful number, since it uses less digits than its factorization.

4028047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 129968.

The product of its (nonzero) digits is 1792, while the sum is 25.

The square root of 4028047 is about 2006.9995017438. Note that the first 3 decimals coincide. The cubic root of 4028047 is about 159.1102567144.

The spelling of 4028047 in words is "four million, twenty-eight thousand, forty-seven".