3984785 has 16 divisors (see below), whose sum is σ = 5498496. Its totient is φ = 2715648.

The previous prime is 3984781. The next prime is 3984791. The reversal of 3984785 is 5874893.

It is a cyclic number.

It is not a de Polignac number, because 3984785 - 2² = 3984781 is a prime.

It is a super-2 number, since 2×3984785² = 31757022992450, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (3984781) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8774 + ... + 9216.

It is an arithmetic number, because the mean of its divisors is an integer number (343656).

Almost surely, 2^3984785 is an apocalyptic number.

3984785 is a gapful number since it is divisible by the number (35) formed by its first and last digit.

It is an amenable number.

3984785 is a deficient number, since it is larger than the sum of its proper divisors (1513711).

3984785 is a wasteful number, since it uses less digits than its factorization.

3984785 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 712.

The product of its digits is 241920, while the sum is 44.

The square root of 3984785 is about 1996.1926259758. The cubic root of 3984785 is about 158.5385802385.

The spelling of 3984785 in words is "three million, nine hundred eighty-four thousand, seven hundred eighty-five".