3985770 has 16 divisors (see below), whose sum is σ = 9565920. Its totient is φ = 1062864.

The previous prime is 3985721. The next prime is 3985777. The reversal of 3985770 is 775893.

It is an Ulam number.

It is not an unprimeable number, because it can be changed into a prime (3985777) 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, 66400 + ... + 66459.

It is an arithmetic number, because the mean of its divisors is an integer number (597870).

Almost surely, 2^3985770 is an apocalyptic number.

3985770 is a gapful number since it is divisible by the number (30) formed by its first and last digit.

3985770 is an abundant number, since it is smaller than the sum of its proper divisors (5580150).

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

3985770 is a wasteful number, since it uses less digits than its factorization.

3985770 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 132869.

The product of its (nonzero) digits is 52920, while the sum is 39.

The square root of 3985770 is about 1996.4393304080. The cubic root of 3985770 is about 158.5516422261.

The spelling of 3985770 in words is "three million, nine hundred eighty-five thousand, seven hundred seventy".