4885991 has 4 divisors (see below), whose sum is σ = 5330184. Its totient is φ = 4441800.

The previous prime is 4885981. The next prime is 4885999. The reversal of 4885991 is 1995884.

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

It is not a de Polignac number, because 4885991 - 2²² = 691687 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 (4885999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 222080 + ... + 222101.

It is an arithmetic number, because the mean of its divisors is an integer number (1332546).

Almost surely, 2^4885991 is an apocalyptic number.

4885991 is a deficient number, since it is larger than the sum of its proper divisors (444193).

4885991 is a wasteful number, since it uses less digits than its factorization.

4885991 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 444192.

The product of its digits is 103680, while the sum is 44.

The square root of 4885991 is about 2210.4277866513. The cubic root of 4885991 is about 169.6879048984.

The spelling of 4885991 in words is "four million, eight hundred eighty-five thousand, nine hundred ninety-one".