499589491 has 4 divisors (see below), whose sum is σ = 503183800. Its totient is φ = 495995184.

The previous prime is 499589473. The next prime is 499589507. The reversal of 499589491 is 194985994.

It is a happy number.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-499589491 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (499589411) 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, 1796946 + ... + 1797223.

It is an arithmetic number, because the mean of its divisors is an integer number (125795950).

Almost surely, 2^499589491 is an apocalyptic number.

499589491 is a deficient number, since it is larger than the sum of its proper divisors (3594309).

499589491 is a wasteful number, since it uses less digits than its factorization.

499589491 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 3594308.

The product of its digits is 4199040, while the sum is 58.

The square root of 499589491 is about 22351.4986298458. The cubic root of 499589491 is about 793.4832523719.

The spelling of 499589491 in words is "four hundred ninety-nine million, five hundred eighty-nine thousand, four hundred ninety-one".