492409945 has 4 divisors (see below), whose sum is σ = 590891940. Its totient is φ = 393927952.

The previous prime is 492409919. The next prime is 492409961. The reversal of 492409945 is 549904294.

It is a happy number.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 74166544 + 418243401 = 8612^2 + 20451^2 .

It is a cyclic number.

It is not a de Polignac number, because 492409945 - 2⁹ = 492409433 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 492409895 and 492409904.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 49240990 + ... + 49240999.

It is an arithmetic number, because the mean of its divisors is an integer number (147722985).

Almost surely, 2^492409945 is an apocalyptic number.

It is an amenable number.

492409945 is a deficient number, since it is larger than the sum of its proper divisors (98481995).

492409945 is an equidigital number, since it uses as much as digits as its factorization.

492409945 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 98481994.

The product of its (nonzero) digits is 466560, while the sum is 46.

The square root of 492409945 is about 22190.3119626561. The cubic root of 492409945 is about 789.6638771985.

The spelling of 492409945 in words is "four hundred ninety-two million, four hundred nine thousand, nine hundred forty-five".