4085947 has 4 divisors (see below), whose sum is σ = 4196416. Its totient is φ = 3975480.

The previous prime is 4085941. The next prime is 4085951. The reversal of 4085947 is 7495804.

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 4085947 - 2⁷ = 4085819 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (37), and also a Moran number because the ratio is a prime number: 110431 = 4085947 / (4 + 0 + 8 + 5 + 9 + 4 + 7).

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (4085941) 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, 55179 + ... + 55252.

It is an arithmetic number, because the mean of its divisors is an integer number (1049104).

Almost surely, 2^4085947 is an apocalyptic number.

4085947 is a deficient number, since it is larger than the sum of its proper divisors (110469).

4085947 is a wasteful number, since it uses less digits than its factorization.

4085947 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 110468.

The product of its (nonzero) digits is 40320, while the sum is 37.

The square root of 4085947 is about 2021.3725534893. The cubic root of 4085947 is about 159.8689943262.

The spelling of 4085947 in words is "four million, eighty-five thousand, nine hundred forty-seven".