4457985 has 16 divisors (see below), whose sum is σ = 8151936. Its totient is φ = 2037888.

The previous prime is 4457983. The next prime is 4457987. The reversal of 4457985 is 5897544.

It is an interprime number because it is at equal distance from previous prime (4457983) and next prime (4457987).

It is not a de Polignac number, because 4457985 - 2¹ = 4457983 is a prime.

It is not an unprimeable number, because it can be changed into a prime (4457983) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (5) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 21124 + ... + 21333.

It is an arithmetic number, because the mean of its divisors is an integer number (509496).

Almost surely, 2^4457985 is an apocalyptic number.

It is an amenable number.

4457985 is a deficient number, since it is larger than the sum of its proper divisors (3693951).

4457985 is a wasteful number, since it uses less digits than its factorization.

4457985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42472.

The product of its digits is 201600, while the sum is 42.

The square root of 4457985 is about 2111.3940892216. The cubic root of 4457985 is about 164.5809384187.

The spelling of 4457985 in words is "four million, four hundred fifty-seven thousand, nine hundred eighty-five".