3988091 has 8 divisors (see below), whose sum is σ = 4152384. Its totient is φ = 3827200.

The previous prime is 3988087. The next prime is 3988093. The reversal of 3988091 is 1908893.

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

It is a cyclic number.

It is not a de Polignac number, because 3988091 - 2² = 3988087 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 (3988093) 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, 1691 + ... + 3291.

It is an arithmetic number, because the mean of its divisors is an integer number (519048).

Almost surely, 2^3988091 is an apocalyptic number.

3988091 is a deficient number, since it is larger than the sum of its proper divisors (164293).

3988091 is a wasteful number, since it uses less digits than its factorization.

3988091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1701.

The product of its (nonzero) digits is 15552, while the sum is 38.

The square root of 3988091 is about 1997.0205306907. The cubic root of 3988091 is about 158.5824122700.

The spelling of 3988091 in words is "three million, nine hundred eighty-eight thousand, ninety-one".