3990835 has 16 divisors (see below), whose sum is σ = 5248800. Its totient is φ = 2899456.

The previous prime is 3990827. The next prime is 3990841. The reversal of 3990835 is 5380993.

It is a cyclic number.

It is not a de Polignac number, because 3990835 - 2³ = 3990827 is a prime.

It is a nialpdrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 3990794 and 3990803.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 1656 + ... + 3274.

It is an arithmetic number, because the mean of its divisors is an integer number (328050).

Almost surely, 2^3990835 is an apocalyptic number.

3990835 is a deficient number, since it is larger than the sum of its proper divisors (1257965).

3990835 is a wasteful number, since it uses less digits than its factorization.

3990835 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1670.

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

The square root of 3990835 is about 1997.7074360376. The cubic root of 3990835 is about 158.6187747281.

The spelling of 3990835 in words is "three million, nine hundred ninety thousand, eight hundred thirty-five".