491470927 has 4 divisors (see below), whose sum is σ = 491523120. Its totient is φ = 491418736.

The previous prime is 491470921. The next prime is 491470937. The reversal of 491470927 is 729074194.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It is a cyclic number.

It is not a de Polignac number, because 491470927 - 2²⁷ = 357253199 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (491470921) 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, 7603 + ... + 32260.

It is an arithmetic number, because the mean of its divisors is an integer number (122880780).

Almost surely, 2^491470927 is an apocalyptic number.

491470927 is a deficient number, since it is larger than the sum of its proper divisors (52193).

491470927 is a wasteful number, since it uses less digits than its factorization.

491470927 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 52192.

The product of its (nonzero) digits is 127008, while the sum is 43.

The square root of 491470927 is about 22169.1435784065. The cubic root of 491470927 is about 789.1615989305.

The spelling of 491470927 in words is "four hundred ninety-one million, four hundred seventy thousand, nine hundred twenty-seven".