4491539 has 8 divisors (see below), whose sum is σ = 4883760. Its totient is φ = 4106016.

The previous prime is 4491533. The next prime is 4491551. The reversal of 4491539 is 9351944.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 4491539 - 2²⁰ = 3442963 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4491499 and 4491508.

It is not an unprimeable number, because it can be changed into a prime (4491533) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 224 + ... + 3005.

It is an arithmetic number, because the mean of its divisors is an integer number (610470).

Almost surely, 2^4491539 is an apocalyptic number.

4491539 is a deficient number, since it is larger than the sum of its proper divisors (392221).

4491539 is a wasteful number, since it uses less digits than its factorization.

4491539 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3349.

The product of its digits is 19440, while the sum is 35.

The square root of 4491539 is about 2119.3251284312. The cubic root of 4491539 is about 164.9928249099.

The spelling of 4491539 in words is "four million, four hundred ninety-one thousand, five hundred thirty-nine".