3990538 has 8 divisors (see below), whose sum is σ = 5997600. Its totient is φ = 1991340.

The previous prime is 3990521. The next prime is 3990541. The reversal of 3990538 is 8350993.

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

It is a junction number, because it is equal to n+sod(n) for n = 3990497 and 3990506.

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, 468 + ... + 2863.

It is an arithmetic number, because the mean of its divisors is an integer number (749700).

Almost surely, 2^3990538 is an apocalyptic number.

3990538 is a deficient number, since it is larger than the sum of its proper divisors (2007062).

3990538 is a wasteful number, since it uses less digits than its factorization.

3990538 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3932.

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

The square root of 3990538 is about 1997.6330994454. The cubic root of 3990538 is about 158.6148398001.

The spelling of 3990538 in words is "three million, nine hundred ninety thousand, five hundred thirty-eight".