4289985 has 24 divisors (see below), whose sum is σ = 8498880. Its totient is φ = 1960992.

The previous prime is 4289977. The next prime is 4290017. The reversal of 4289985 is 5899824.

It is not a de Polignac number, because 4289985 - 2³ = 4289977 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a d-powerful number, because it can be written as 4¹¹ + 2 + 8 + 9³ + 9⁵ + 8⁵ + 5⁵ .

It is a self number, because there is not a number n which added to its sum of digits gives 4289985.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 6495 + ... + 7124.

It is an arithmetic number, because the mean of its divisors is an integer number (354120).

Almost surely, 2^4289985 is an apocalyptic number.

4289985 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

4289985 is a deficient number, since it is larger than the sum of its proper divisors (4208895).

4289985 is a wasteful number, since it uses less digits than its factorization.

4289985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13637 (or 13634 counting only the distinct ones).

The product of its digits is 207360, while the sum is 45.

The square root of 4289985 is about 2071.2278966835. The cubic root of 4289985 is about 162.4869890963.

The spelling of 4289985 in words is "four million, two hundred eighty-nine thousand, nine hundred eighty-five".