490404420 has 144 divisors (see below), whose sum is σ = 1631290752. Its totient is φ = 118264320.

The previous prime is 490404419. The next prime is 490404427. The reversal of 490404420 is 24404094.

It is not an unprimeable number, because it can be changed into a prime (490404427) by changing a digit.

It is a polite number, since it can be written in 47 ways as a sum of consecutive naturals, for example, 460809 + ... + 461871.

It is an arithmetic number, because the mean of its divisors is an integer number (11328408).

Almost surely, 2^490404420 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 490404420, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (815645376).

490404420 is an abundant number, since it is smaller than the sum of its proper divisors (1140886332).

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

490404420 is a wasteful number, since it uses less digits than its factorization.

490404420 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1322 (or 1317 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 27.

The square root of 490404420 is about 22145.0766537395. The cubic root of 490404420 is about 788.5903505564.

The spelling of 490404420 in words is "four hundred ninety million, four hundred four thousand, four hundred twenty".