3991062 has 8 divisors (see below), whose sum is σ = 7982136. Its totient is φ = 1330352.

The previous prime is 3991051. The next prime is 3991087. The reversal of 3991062 is 2601993.

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

3991062 is an admirable number.

It is an Ulam number.

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, 332583 + ... + 332594.

It is an arithmetic number, because the mean of its divisors is an integer number (997767).

Almost surely, 2^3991062 is an apocalyptic number.

3991062 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

3991062 is a wasteful number, since it uses less digits than its factorization.

3991062 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 665182.

The product of its (nonzero) digits is 2916, while the sum is 30.

The square root of 3991062 is about 1997.7642503559. The cubic root of 3991062 is about 158.6217821003.

The spelling of 3991062 in words is "three million, nine hundred ninety-one thousand, sixty-two".