3916991 has 8 divisors (see below), whose sum is σ = 4234944. Its totient is φ = 3601440.

The previous prime is 3916981. The next prime is 3917009. The reversal of 3916991 is 1996193.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-3916991 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (3916901) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 4361 + ... + 5181.

It is an arithmetic number, because the mean of its divisors is an integer number (529368).

Almost surely, 2^3916991 is an apocalyptic number.

3916991 is a deficient number, since it is larger than the sum of its proper divisors (317953).

3916991 is a wasteful number, since it uses less digits than its factorization.

3916991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1201.

The product of its digits is 13122, while the sum is 38.

The square root of 3916991 is about 1979.1389541919. The cubic root of 3916991 is about 157.6343491270.

The spelling of 3916991 in words is "three million, nine hundred sixteen thousand, nine hundred ninety-one".