494639667956 has 48 divisors (see below), whose sum is σ = 1014836651136. Its totient is φ = 206536708224.

The previous prime is 494639667947. The next prime is 494639667959. The reversal of 494639667956 is 659766936494.

It is a super-2 number, since 2×494639667956² (a number of 24 digits) contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (494639667959) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 39431 + ... + 995406.

It is an arithmetic number, because the mean of its divisors is an integer number (21142430232).

Almost surely, 2^494639667956 is an apocalyptic number.

It is an amenable number.

494639667956 is an abundant number, since it is smaller than the sum of its proper divisors (520196983180).

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

494639667956 is a wasteful number, since it uses less digits than its factorization.

494639667956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1035288 (or 1035286 counting only the distinct ones).

The product of its digits is 1587237120, while the sum is 74.

The spelling of 494639667956 in words is "four hundred ninety-four billion, six hundred thirty-nine million, six hundred sixty-seven thousand, nine hundred fifty-six".