494309340 has 288 divisors, whose sum is σ = 1856784384. Its totient is φ = 103864320.

The previous prime is 494309303. The next prime is 494309341. The reversal of 494309340 is 43903494.

494309340 is a `hidden beast` number, since 4 + 9 + 4 + 309 + 340 = 666.

It is a super-2 number, since 2×494309340² = 488683447222471200, which contains 22 as substring.

It is a Harshad number since it is a multiple of its sum of digits (36).

It is a junction number, because it is equal to n+sod(n) for n = 494309295 and 494309304.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494309341) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1006495 + ... + 1006985.

It is an arithmetic number, because the mean of its divisors is an integer number (6447168).

Almost surely, 2^494309340 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 494309340, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (928392192).

494309340 is an abundant number, since it is smaller than the sum of its proper divisors (1362475044).

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

494309340 is a wasteful number, since it uses less digits than its factorization.

494309340 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 577 (or 572 counting only the distinct ones).

The product of its (nonzero) digits is 46656, while the sum is 36.

The square root of 494309340 is about 22233.0686141162. The cubic root of 494309340 is about 790.6779098046.

The spelling of 494309340 in words is "four hundred ninety-four million, three hundred nine thousand, three hundred forty".