3997846 has 4 divisors (see below), whose sum is σ = 5996772. Its totient is φ = 1998922.

The previous prime is 3997811. The next prime is 3997849. The reversal of 3997846 is 6487993.

It is a semiprime because it is the product of two primes.

It is a junction number, because it is equal to n+sod(n) for n = 3997796 and 3997805.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3997849) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999460 + ... + 999463.

It is an arithmetic number, because the mean of its divisors is an integer number (1499193).

Almost surely, 2^3997846 is an apocalyptic number.

3997846 is a deficient number, since it is larger than the sum of its proper divisors (1998926).

3997846 is a wasteful number, since it uses less digits than its factorization.

3997846 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1998925.

The product of its digits is 326592, while the sum is 46.

The square root of 3997846 is about 1999.4614274849. The cubic root of 3997846 is about 158.7116062318.

The spelling of 3997846 in words is "three million, nine hundred ninety-seven thousand, eight hundred forty-six".