492690409 has 8 divisors (see below), whose sum is σ = 522330368. Its totient is φ = 463909680.

The previous prime is 492690377. The next prime is 492690427. The reversal of 492690409 is 904096294.

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 492690409 - 2⁵ = 492690377 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (492690439) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 213627 + ... + 215920.

It is an arithmetic number, because the mean of its divisors is an integer number (65291296).

Almost surely, 2^492690409 is an apocalyptic number.

It is an amenable number.

492690409 is a deficient number, since it is larger than the sum of its proper divisors (29639959).

492690409 is a wasteful number, since it uses less digits than its factorization.

492690409 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 429615.

The product of its (nonzero) digits is 139968, while the sum is 43.

The square root of 492690409 is about 22196.6305776350. The cubic root of 492690409 is about 789.8137728000.

The spelling of 492690409 in words is "four hundred ninety-two million, six hundred ninety thousand, four hundred nine".