4491331439 has 8 divisors (see below), whose sum is σ = 5434888608. Its totient is φ = 3623258880.

The previous prime is 4491331433. The next prime is 4491331457. The reversal of 4491331439 is 9341331944.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4491331439 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 4491331396 and 4491331405.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4491331433) 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, 18871022 + ... + 18871259.

It is an arithmetic number, because the mean of its divisors is an integer number (679361076).

Almost surely, 2^4491331439 is an apocalyptic number.

4491331439 is a deficient number, since it is larger than the sum of its proper divisors (943557169).

4491331439 is a wasteful number, since it uses less digits than its factorization.

4491331439 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 37742305.

The product of its digits is 139968, while the sum is 41.

The square root of 4491331439 is about 67017.3965400030. The cubic root of 4491331439 is about 1649.9028334578.

The spelling of 4491331439 in words is "four billion, four hundred ninety-one million, three hundred thirty-one thousand, four hundred thirty-nine".