3990346 has 8 divisors (see below), whose sum is σ = 6008580. Its totient is φ = 1987488.

The previous prime is 3990331. The next prime is 3990353. The reversal of 3990346 is 6430993.

It can be written as a sum of positive squares in 2 ways, for example, as 3956121 + 34225 = 1989^2 + 185^2 .

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

It is a super-2 number, since 2×3990346² = 31845722399432, which contains 22 as substring.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3171 + ... + 4246.

Almost surely, 2^3990346 is an apocalyptic number.

3990346 is a deficient number, since it is larger than the sum of its proper divisors (2018234).

3990346 is a wasteful number, since it uses less digits than its factorization.

3990346 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7688.

The product of its (nonzero) digits is 17496, while the sum is 34.

The square root of 3990346 is about 1997.5850419945. The cubic root of 3990346 is about 158.6122959044.

The spelling of 3990346 in words is "three million, nine hundred ninety thousand, three hundred forty-six".