4229985 has 16 divisors (see below), whose sum is σ = 6862464. Its totient is φ = 2224512.

The previous prime is 4229971. The next prime is 4229993. The reversal of 4229985 is 5899224.

4229985 = T₁₆₄ + T₁₆₅ + ... + T₃₀₉.

It is not a de Polignac number, because 4229985 - 2⁶ = 4229921 is a prime.

It is a d-powerful number, because it can be written as 4¹¹ + 2 + 2¹¹ + 9 + 9³ + 8⁵ + 5³ .

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 837 + ... + 3026.

It is an arithmetic number, because the mean of its divisors is an integer number (428904).

Almost surely, 2^4229985 is an apocalyptic number.

It is an amenable number.

4229985 is a deficient number, since it is larger than the sum of its proper divisors (2632479).

4229985 is a wasteful number, since it uses less digits than its factorization.

4229985 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3944.

The product of its digits is 51840, while the sum is 39.

The square root of 4229985 is about 2056.6927334923. The cubic root of 4229985 is about 161.7259120845.

The spelling of 4229985 in words is "four million, two hundred twenty-nine thousand, nine hundred eighty-five".