4488991 has 4 divisors (see below), whose sum is σ = 4834312. Its totient is φ = 4143672.

The previous prime is 4488983. The next prime is 4489007. The reversal of 4488991 is 1998844.

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

It is not a de Polignac number, because 4488991 - 2³ = 4488983 is a prime.

It is a Duffinian number.

4488991 is a lucky number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4488961) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 172641 + ... + 172666.

It is an arithmetic number, because the mean of its divisors is an integer number (1208578).

Almost surely, 2^4488991 is an apocalyptic number.

4488991 is a deficient number, since it is larger than the sum of its proper divisors (345321).

4488991 is a wasteful number, since it uses less digits than its factorization.

4488991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 345320.

The product of its digits is 82944, while the sum is 43.

The square root of 4488991 is about 2118.7239083939. The cubic root of 4488991 is about 164.9616194783.

It can be divided in two parts, 448899 and 1, that added together give a square (448900 = 670²).

The spelling of 4488991 in words is "four million, four hundred eighty-eight thousand, nine hundred ninety-one".