494186840 has 64 divisors (see below), whose sum is σ = 1294781760. Its totient is φ = 166233600.

The previous prime is 494186813. The next prime is 494186851. The reversal of 494186840 is 48681494.

It is a junction number, because it is equal to n+sod(n) for n = 494186791 and 494186800.

It is a congruent number.

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, 1811 + ... + 31490.

It is an arithmetic number, because the mean of its divisors is an integer number (20230965).

Almost surely, 2^494186840 is an apocalyptic number.

494186840 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 494186840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (647390880).

494186840 is an abundant number, since it is smaller than the sum of its proper divisors (800594920).

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

494186840 is a wasteful number, since it uses less digits than its factorization.

494186840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 33372 (or 33368 counting only the distinct ones).

The product of its (nonzero) digits is 221184, while the sum is 44.

The square root of 494186840 is about 22230.3135380498. The cubic root of 494186840 is about 790.6125890036.

The spelling of 494186840 in words is "four hundred ninety-four million, one hundred eighty-six thousand, eight hundred forty".