491934927 has 16 divisors (see below), whose sum is σ = 727274880. Its totient is φ = 293253600.

The previous prime is 491934913. The next prime is 491934959. The reversal of 491934927 is 729439194.

It is a happy number.

It is not a de Polignac number, because 491934927 - 2⁸ = 491934671 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491934977) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 120177 + ... + 124202.

It is an arithmetic number, because the mean of its divisors is an integer number (45454680).

Almost surely, 2^491934927 is an apocalyptic number.

491934927 is a deficient number, since it is larger than the sum of its proper divisors (235339953).

491934927 is a wasteful number, since it uses less digits than its factorization.

491934927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 244454.

The product of its digits is 489888, while the sum is 48.

The square root of 491934927 is about 22179.6061056097. The cubic root of 491934927 is about 789.4098712003.

The spelling of 491934927 in words is "four hundred ninety-one million, nine hundred thirty-four thousand, nine hundred twenty-seven".