4463991 has 20 divisors (see below), whose sum is σ = 7622032. Its totient is φ = 2550528.

The previous prime is 4463971. The next prime is 4464007. The reversal of 4463991 is 1993644.

It is not a de Polignac number, because 4463991 - 2¹¹ = 4461943 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 (4463971) by changing a digit.

It is a polite number, since it can be written in 19 ways as a sum of consecutive naturals, for example, 3370 + ... + 4503.

Almost surely, 2^4463991 is an apocalyptic number.

4463991 is a deficient number, since it is larger than the sum of its proper divisors (3158041).

4463991 is an equidigital number, since it uses as much as digits as its factorization.

4463991 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7892 (or 7883 counting only the distinct ones).

The product of its digits is 23328, while the sum is 36.

The square root of 4463991 is about 2112.8158935411. The cubic root of 4463991 is about 164.6548155585.

The spelling of 4463991 in words is "four million, four hundred sixty-three thousand, nine hundred ninety-one".