490544865 has 24 divisors (see below), whose sum is σ = 857811240. Its totient is φ = 259305984.

The previous prime is 490544849. The next prime is 490544867. The reversal of 490544865 is 568445094.

490544865 is a `hidden beast` number, since 49 + 0 + 544 + 8 + 65 = 666.

It can be written as a sum of positive squares in 4 ways, for example, as 12510369 + 478034496 = 3537^2 + 21864^2 .

It is not a de Polignac number, because 490544865 - 2⁴ = 490544849 is a prime.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a self number, because there is not a number n which added to its sum of digits gives 490544865.

It is not an unprimeable number, because it can be changed into a prime (490544867) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 43150 + ... + 53319.

It is an arithmetic number, because the mean of its divisors is an integer number (35742135).

Almost surely, 2^490544865 is an apocalyptic number.

490544865 is a gapful number since it is divisible by the number (45) formed by its first and last digit.

It is an amenable number.

490544865 is a deficient number, since it is larger than the sum of its proper divisors (367266375).

490544865 is a wasteful number, since it uses less digits than its factorization.

490544865 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 96593 (or 96590 counting only the distinct ones).

The product of its (nonzero) digits is 691200, while the sum is 45.

The square root of 490544865 is about 22148.2474475973. The cubic root of 490544865 is about 788.6656238045.

It can be divided in two parts, 4905 and 44865, that added together give a triangular number (49770 = T₃₁₅).

The spelling of 490544865 in words is "four hundred ninety million, five hundred forty-four thousand, eight hundred sixty-five".