494294339840 has 144 divisors (see below), whose sum is σ = 1357016505600. Its totient is φ = 168985681920.

The previous prime is 494294339837. The next prime is 494294339879. The reversal of 494294339840 is 48933492494.

It is a super-2 number, since 2×494294339840² (a number of 24 digits) contains 22 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 494294339840.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 3048005 + ... + 3206075.

Almost surely, 2^494294339840 is an apocalyptic number.

494294339840 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 494294339840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (678508252800).

494294339840 is an abundant number, since it is smaller than the sum of its proper divisors (862722165760).

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

494294339840 is a wasteful number, since it uses less digits than its factorization.

494294339840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 158448 (or 158434 counting only the distinct ones).

The product of its (nonzero) digits is 26873856, while the sum is 59.

The spelling of 494294339840 in words is "four hundred ninety-four billion, two hundred ninety-four million, three hundred thirty-nine thousand, eight hundred forty".