491267967 has 8 divisors (see below), whose sum is σ = 656312880. Its totient is φ = 326867520.

The previous prime is 491267963. The next prime is 491267969. The reversal of 491267967 is 769762194.

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

It is not a de Polignac number, because 491267967 - 2² = 491267963 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491267963) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 159334 + ... + 162387.

It is an arithmetic number, because the mean of its divisors is an integer number (82039110).

Almost surely, 2^491267967 is an apocalyptic number.

491267967 is a deficient number, since it is larger than the sum of its proper divisors (165044913).

491267967 is a wasteful number, since it uses less digits than its factorization.

491267967 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 322233.

The product of its digits is 1143072, while the sum is 51.

The square root of 491267967 is about 22164.5655721018. The cubic root of 491267967 is about 789.0529520894.

The spelling of 491267967 in words is "four hundred ninety-one million, two hundred sixty-seven thousand, nine hundred sixty-seven".