490049409 has 4 divisors (see below), whose sum is σ = 653399216. Its totient is φ = 326699604.

The previous prime is 490049377. The next prime is 490049419. The reversal of 490049409 is 904940094.

It is a happy number.

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 not a de Polignac number, because 490049409 - 2⁵ = 490049377 is a prime.

It is a super-2 number, since 2×490049409² = 480296846522498562, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490049419) 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, 81674899 + ... + 81674904.

It is an arithmetic number, because the mean of its divisors is an integer number (163349804).

Almost surely, 2^490049409 is an apocalyptic number.

It is an amenable number.

490049409 is a deficient number, since it is larger than the sum of its proper divisors (163349807).

490049409 is a wasteful number, since it uses less digits than its factorization.

490049409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 163349806.

The product of its (nonzero) digits is 46656, while the sum is 39.

The square root of 490049409 is about 22137.0596285957. The cubic root of 490049409 is about 788.4000138873.

The spelling of 490049409 in words is "four hundred ninety million, forty-nine thousand, four hundred nine".