3985390 has 8 divisors (see below), whose sum is σ = 7173720. Its totient is φ = 1594152.

The previous prime is 3985363. The next prime is 3985393. The reversal of 3985390 is 935893.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3985393) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 199260 + ... + 199279.

It is an arithmetic number, because the mean of its divisors is an integer number (896715).

Almost surely, 2^3985390 is an apocalyptic number.

3985390 is a deficient number, since it is larger than the sum of its proper divisors (3188330).

3985390 is a wasteful number, since it uses less digits than its factorization.

3985390 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 398546.

The product of its (nonzero) digits is 29160, while the sum is 37.

The square root of 3985390 is about 1996.3441587061. The cubic root of 3985390 is about 158.5466033387.

The spelling of 3985390 in words is "three million, nine hundred eighty-five thousand, three hundred ninety".