494217140 has 24 divisors (see below), whose sum is σ = 1065907752. Its totient is φ = 192343680.

The previous prime is 494217131. The next prime is 494217161. The reversal of 494217140 is 41712494.

It can be written as a sum of positive squares in 4 ways, for example, as 242487184 + 251729956 = 15572^2 + 15866^2 .

It is a junction number, because it is equal to n+sod(n) for n = 494217097 and 494217106.

It is a congruent number.

It is an unprimeable number.

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 7 ways as a sum of consecutive naturals, for example, 333191 + ... + 334670.

It is an arithmetic number, because the mean of its divisors is an integer number (44412823).

Almost surely, 2^494217140 is an apocalyptic number.

It is an amenable number.

494217140 is an abundant number, since it is smaller than the sum of its proper divisors (571690612).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

494217140 is a wasteful number, since it uses less digits than its factorization.

494217140 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 667907 (or 667905 counting only the distinct ones).

The product of its (nonzero) digits is 8064, while the sum is 32.

The square root of 494217140 is about 22230.9950294628. The cubic root of 494217140 is about 790.6287469085.

The spelling of 494217140 in words is "four hundred ninety-four million, two hundred seventeen thousand, one hundred forty".