3991059 has 16 divisors (see below), whose sum is σ = 6026400. Its totient is φ = 2609568.

The previous prime is 3991051. The next prime is 3991087. The reversal of 3991059 is 9501993.

It is not a de Polignac number, because 3991059 - 2³ = 3991051 is a prime.

It is not an unprimeable number, because it can be changed into a prime (3991051) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 37 + ... + 2825.

It is an arithmetic number, because the mean of its divisors is an integer number (376650).

Almost surely, 2^3991059 is an apocalyptic number.

3991059 is a deficient number, since it is larger than the sum of its proper divisors (2035341).

3991059 is a wasteful number, since it uses less digits than its factorization.

3991059 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2851 (or 2845 counting only the distinct ones).

The product of its (nonzero) digits is 10935, while the sum is 36.

The square root of 3991059 is about 1997.7634995164. The cubic root of 3991059 is about 158.6217423561.

The spelling of 3991059 in words is "three million, nine hundred ninety-one thousand, fifty-nine".