3985530 has 16 divisors (see below), whose sum is σ = 9565344. Its totient is φ = 1062800.

The previous prime is 3985523. The next prime is 3985537. The reversal of 3985530 is 355893.

It is an interprime number because it is at equal distance from previous prime (3985523) and next prime (3985537).

It is a junction number, because it is equal to n+sod(n) for n = 3985491 and 3985500.

It is not an unprimeable number, because it can be changed into a prime (3985537) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 66396 + ... + 66455.

It is an arithmetic number, because the mean of its divisors is an integer number (597834).

Almost surely, 2^3985530 is an apocalyptic number.

3985530 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3985530 is an abundant number, since it is smaller than the sum of its proper divisors (5579814).

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

3985530 is a wasteful number, since it uses less digits than its factorization.

3985530 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132861.

The product of its (nonzero) digits is 16200, while the sum is 33.

The square root of 3985530 is about 1996.3792224926. The cubic root of 3985530 is about 158.5484598081.

The spelling of 3985530 in words is "three million, nine hundred eighty-five thousand, five hundred thirty".