3946990 has 8 divisors (see below), whose sum is σ = 7104600. Its totient is φ = 1578792.

The previous prime is 3946981. The next prime is 3946991. The reversal of 3946990 is 996493.

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 (3946991) 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, 197340 + ... + 197359.

It is an arithmetic number, because the mean of its divisors is an integer number (888075).

Almost surely, 2^3946990 is an apocalyptic number.

3946990 is a deficient number, since it is larger than the sum of its proper divisors (3157610).

3946990 is a wasteful number, since it uses less digits than its factorization.

3946990 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 394706.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 3946990 is about 1986.7032994385. The cubic root of 3946990 is about 158.0357500688.

The spelling of 3946990 in words is "three million, nine hundred forty-six thousand, nine hundred ninety".