490782386 has 4 divisors (see below), whose sum is σ = 736173582. Its totient is φ = 245391192.

The previous prime is 490782377. The next prime is 490782389. The reversal of 490782386 is 683287094.

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

It can be written as a sum of positive squares in only one way, i.e., 312052225 + 178730161 = 17665^2 + 13369^2 .

It is a self number, because there is not a number n which added to its sum of digits gives 490782386.

It is not an unprimeable number, because it can be changed into a prime (490782389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 122695595 + ... + 122695598.

Almost surely, 2^490782386 is an apocalyptic number.

490782386 is a deficient number, since it is larger than the sum of its proper divisors (245391196).

490782386 is a wasteful number, since it uses less digits than its factorization.

490782386 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 245391195.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 490782386 is about 22153.6088707912. The cubic root of 490782386 is about 788.7928934557.

The spelling of 490782386 in words is "four hundred ninety million, seven hundred eighty-two thousand, three hundred eighty-six".