490135321 has 15 divisors (see below), whose sum is σ = 535062713. Its totient is φ = 448978920.

The previous prime is 490135241. The next prime is 490135339. The reversal of 490135321 is 123531094.

The square root of 490135321 is 22139.

It is a perfect power (a square), and thus also a powerful number.

It can be written as a sum of positive squares in 2 ways, for example, as 243016921 + 247118400 = 15589^2 + 15720^2 .

It is a de Polignac number, because none of the positive numbers 2^k-490135321 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 490135321.

It is not an unprimeable number, because it can be changed into a prime (490135421) by changing a digit.

It is a polite number, since it can be written in 14 ways as a sum of consecutive naturals, for example, 3741426 + ... + 3741556.

Almost surely, 2^490135321 is an apocalyptic number.

490135321 is the 22139-th square number.

490135321 is the 11070-th centered octagonal number.

It is an amenable number.

490135321 is a deficient number, since it is larger than the sum of its proper divisors (44927392).

490135321 is an frugal number, since it uses more digits than its factorization.

490135321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 314 (or 144 counting only the distinct ones).

The product of its (nonzero) digits is 3240, while the sum is 28.

The cubic root of 490135321 is about 788.4460834353.

The spelling of 490135321 in words is "four hundred ninety million, one hundred thirty-five thousand, three hundred twenty-one".