4263985 has 8 divisors (see below), whose sum is σ = 5582016. Its totient is φ = 3101040.

The previous prime is 4263979. The next prime is 4264021. The reversal of 4263985 is 5893624.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 4263985 - 2³ = 4263977 is a prime.

It is an Ulam number.

It is a d-powerful number, because it can be written as 4⁸ + 2²² + 6 + 3² + 9 + 8⁴ + 5² .

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 38709 + ... + 38818.

It is an arithmetic number, because the mean of its divisors is an integer number (697752).

Almost surely, 2^4263985 is an apocalyptic number.

It is an amenable number.

4263985 is a deficient number, since it is larger than the sum of its proper divisors (1318031).

4263985 is a wasteful number, since it uses less digits than its factorization.

4263985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 77543.

The product of its digits is 51840, while the sum is 37.

The square root of 4263985 is about 2064.9418878022. The cubic root of 4263985 is about 162.1580660139.

It can be divided in two parts, 42639 and 85, that added together give a palindrome (42724).

The spelling of 4263985 in words is "four million, two hundred sixty-three thousand, nine hundred eighty-five".