492277921 has 4 divisors (see below), whose sum is σ = 492348672. Its totient is φ = 492207172.

The previous prime is 492277913. The next prime is 492277931. The reversal of 492277921 is 129772294.

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 492277921 - 2³ = 492277913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492277931) 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, 23641 + ... + 39286.

It is an arithmetic number, because the mean of its divisors is an integer number (123087168).

Almost surely, 2^492277921 is an apocalyptic number.

It is an amenable number.

492277921 is a deficient number, since it is larger than the sum of its proper divisors (70751).

492277921 is an equidigital number, since it uses as much as digits as its factorization.

492277921 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 70750.

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

The square root of 492277921 is about 22187.3369515136. The cubic root of 492277921 is about 789.5932965075.

The spelling of 492277921 in words is "four hundred ninety-two million, two hundred seventy-seven thousand, nine hundred twenty-one".