494403840 has 216 divisors, whose sum is σ = 1955274048. Its totient is φ = 112988160.

The previous prime is 494403839. The next prime is 494403851. The reversal of 494403840 is 48304494.

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 = 494403795 and 494403804.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 77575 + ... + 83705.

Almost surely, 2^494403840 is an apocalyptic number.

494403840 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 494403840, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (977637024).

494403840 is an abundant number, since it is smaller than the sum of its proper divisors (1460870208).

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

494403840 is a wasteful number, since it uses less digits than its factorization.

494403840 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6165 (or 6148 counting only the distinct ones).

The product of its (nonzero) digits is 55296, while the sum is 36.

The square root of 494403840 is about 22235.1937252636. The cubic root of 494403840 is about 790.7282927635.

The spelling of 494403840 in words is "four hundred ninety-four million, four hundred three thousand, eight hundred forty".