491463321 has 4 divisors (see below), whose sum is σ = 655284432. Its totient is φ = 327642212.

The previous prime is 491463311. The next prime is 491463337. The reversal of 491463321 is 123364194.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 491463321 - 2⁵ = 491463289 is a prime.

It is not an unprimeable number, because it can be changed into a prime (491463311) 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, 81910551 + ... + 81910556.

It is an arithmetic number, because the mean of its divisors is an integer number (163821108).

Almost surely, 2^491463321 is an apocalyptic number.

It is an amenable number.

491463321 is a deficient number, since it is larger than the sum of its proper divisors (163821111).

491463321 is a wasteful number, since it uses less digits than its factorization.

491463321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 163821110.

The product of its digits is 15552, while the sum is 33.

The square root of 491463321 is about 22168.9720330014. The cubic root of 491463321 is about 789.1575278900.

The spelling of 491463321 in words is "four hundred ninety-one million, four hundred sixty-three thousand, three hundred twenty-one".