492712891 has 8 divisors (see below), whose sum is σ = 548941824. Its totient is φ = 438390120.

The previous prime is 492712873. The next prime is 492712897. The reversal of 492712891 is 198217294.

It is a happy number.

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

It is a cyclic number.

It is not a de Polignac number, because 492712891 - 2⁵ = 492712859 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492712897) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 475995 + ... + 477028.

It is an arithmetic number, because the mean of its divisors is an integer number (68617728).

Almost surely, 2^492712891 is an apocalyptic number.

492712891 is a deficient number, since it is larger than the sum of its proper divisors (56228933).

492712891 is a wasteful number, since it uses less digits than its factorization.

492712891 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 953081.

The product of its digits is 72576, while the sum is 43.

The square root of 492712891 is about 22197.1370000728. The cubic root of 492712891 is about 789.8257859716.

The spelling of 492712891 in words is "four hundred ninety-two million, seven hundred twelve thousand, eight hundred ninety-one".