490398481 has 4 divisors (see below), whose sum is σ = 503652532. Its totient is φ = 477144432.

The previous prime is 490398463. The next prime is 490398509. The reversal of 490398481 is 184893094.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 469155600 + 21242881 = 21660^2 + 4609^2 .

It is a cyclic number.

It is not a de Polignac number, because 490398481 - 2⁷ = 490398353 is a prime.

It is a super-2 number, since 2×490398481² = 480981340334214722, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490398401) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 6626970 + ... + 6627043.

It is an arithmetic number, because the mean of its divisors is an integer number (125913133).

Almost surely, 2^490398481 is an apocalyptic number.

It is an amenable number.

490398481 is a deficient number, since it is larger than the sum of its proper divisors (13254051).

490398481 is a wasteful number, since it uses less digits than its factorization.

490398481 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13254050.

The product of its (nonzero) digits is 248832, while the sum is 46.

The square root of 490398481 is about 22144.9425603229. The cubic root of 490398481 is about 788.5871671586.

The spelling of 490398481 in words is "four hundred ninety million, three hundred ninety-eight thousand, four hundred eighty-one".