4499991 has 18 divisors (see below), whose sum is σ = 6762912. Its totient is φ = 2880360.

The previous prime is 4499969. The next prime is 4500007. The reversal of 4499991 is 1999944.

It is not a de Polignac number, because 4499991 - 2⁷ = 4499863 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4499591) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 35370 + ... + 35496.

Almost surely, 2^4499991 is an apocalyptic number.

4499991 is a deficient number, since it is larger than the sum of its proper divisors (2262921).

4499991 is a wasteful number, since it uses less digits than its factorization.

4499991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 291 (or 161 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 4499991 is about 2121.3182222382. The cubic root of 4499991 is about 165.0962523804.

It can be divided in two parts, 449 and 9991, that added together give a triangular number (10440 = T₁₄₄).

The spelling of 4499991 in words is "four million, four hundred ninety-nine thousand, nine hundred ninety-one".