4197985 has 16 divisors (see below), whose sum is σ = 5548032. Its totient is φ = 3024000.

The previous prime is 4197967. The next prime is 4198003. The reversal of 4197985 is 5897914.

It is an interprime number because it is at equal distance from previous prime (4197967) and next prime (4198003).

It is not a de Polignac number, because 4197985 - 2⁷ = 4197857 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 6685 + ... + 7285.

It is an arithmetic number, because the mean of its divisors is an integer number (346752).

Almost surely, 2^4197985 is an apocalyptic number.

It is an amenable number.

4197985 is a deficient number, since it is larger than the sum of its proper divisors (1350047).

4197985 is a wasteful number, since it uses less digits than its factorization.

4197985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 744.

The product of its digits is 90720, while the sum is 43.

The square root of 4197985 is about 2048.8984845521. The cubic root of 4197985 is about 161.3170584217.

The spelling of 4197985 in words is "four million, one hundred ninety-seven thousand, nine hundred eighty-five".