3985420 has 24 divisors (see below), whose sum is σ = 8467200. Its totient is φ = 1575552.

The previous prime is 3985409. The next prime is 3985433. The reversal of 3985420 is 245893.

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, 661 + ... + 2899.

It is an arithmetic number, because the mean of its divisors is an integer number (352800).

Almost surely, 2^3985420 is an apocalyptic number.

It is an amenable number.

3985420 is an abundant number, since it is smaller than the sum of its proper divisors (4481780).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3985420 is a wasteful number, since it uses less digits than its factorization.

3985420 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2337 (or 2335 counting only the distinct ones).

The product of its (nonzero) digits is 8640, while the sum is 31.

The square root of 3985420 is about 1996.3516724265. The cubic root of 3985420 is about 158.5470011572.

The spelling of 3985420 in words is "three million, nine hundred eighty-five thousand, four hundred twenty".