3990430 has 8 divisors (see below), whose sum is σ = 7182792. Its totient is φ = 1596168.

The previous prime is 3990419. The next prime is 3990449. The reversal of 3990430 is 340993.

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

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, 199512 + ... + 199531.

It is an arithmetic number, because the mean of its divisors is an integer number (897849).

Almost surely, 2^3990430 is an apocalyptic number.

3990430 is a deficient number, since it is larger than the sum of its proper divisors (3192362).

3990430 is a wasteful number, since it uses less digits than its factorization.

3990430 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 399050.

The product of its (nonzero) digits is 2916, while the sum is 28.

The square root of 3990430 is about 1997.6060672715. The cubic root of 3990430 is about 158.6134088688.

The spelling of 3990430 in words is "three million, nine hundred ninety thousand, four hundred thirty".