3920998 has 16 divisors (see below), whose sum is σ = 6082560. Its totient is φ = 1894536.

The previous prime is 3920989. The next prime is 3921023. The reversal of 3920998 is 8990293.

It is a happy number.

It is a self number, because there is not a number n which added to its sum of digits gives 3920998.

It is a congruent number.

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 7 ways as a sum of consecutive naturals, for example, 10743 + ... + 11101.

It is an arithmetic number, because the mean of its divisors is an integer number (380160).

Almost surely, 2^3920998 is an apocalyptic number.

3920998 is a deficient number, since it is larger than the sum of its proper divisors (2161562).

3920998 is a wasteful number, since it uses less digits than its factorization.

3920998 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 531.

The product of its (nonzero) digits is 34992, while the sum is 40.

The square root of 3920998 is about 1980.1510043429. The cubic root of 3920998 is about 157.6880830241.

The spelling of 3920998 in words is "three million, nine hundred twenty thousand, nine hundred ninety-eight".