490778775 has 72 divisors (see below), whose sum is σ = 900463200. Its totient is φ = 255467520.

The previous prime is 490778749. The next prime is 490778833. The reversal of 490778775 is 577877094.

490778775 is a `hidden beast` number, since 490 + 7 + 7 + 87 + 75 = 666.

It is not a de Polignac number, because 490778775 - 2⁹ = 490778263 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 71 ways as a sum of consecutive naturals, for example, 2466126 + ... + 2466324.

Almost surely, 2^490778775 is an apocalyptic number.

490778775 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

490778775 is a deficient number, since it is larger than the sum of its proper divisors (409684425).

490778775 is a wasteful number, since it uses less digits than its factorization.

490778775 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 425 (or 417 counting only the distinct ones).

The product of its (nonzero) digits is 3457440, while the sum is 54.

The square root of 490778775 is about 22153.5273715045. The cubic root of 490778775 is about 788.7909588997.

The spelling of 490778775 in words is "four hundred ninety million, seven hundred seventy-eight thousand, seven hundred seventy-five".