8849991 has 16 divisors (see below), whose sum is σ = 12521600. Its totient is φ = 5544288.

The previous prime is 8849987. The next prime is 8849999. The reversal of 8849991 is 1999488.

It is not a de Polignac number, because 8849991 - 2² = 8849987 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 8849991.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (8849999) 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, 7365 + ... + 8481.

It is an arithmetic number, because the mean of its divisors is an integer number (782600).

Almost surely, 2^8849991 is an apocalyptic number.

8849991 is a deficient number, since it is larger than the sum of its proper divisors (3671609).

8849991 is a wasteful number, since it uses less digits than its factorization.

8849991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1278.

The product of its digits is 186624, while the sum is 48.

The square root of 8849991 is about 2974.8934434699. The cubic root of 8849991 is about 206.8462299388.

The spelling of 8849991 in words is "eight million, eight hundred forty-nine thousand, nine hundred ninety-one".