490942744321 has 4 divisors (see below), whose sum is σ = 507871804500. Its totient is φ = 474013684144.

The previous prime is 490942744273. The next prime is 490942744339. The reversal of 490942744321 is 123447249094.

It is a happy number.

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 308985898225 + 181956846096 = 555865^2 + 426564^2 .

It is a cyclic number.

It is not a de Polignac number, because 490942744321 - 2²³ = 490934355713 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (490942744361) 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, 8464530046 + ... + 8464530103.

It is an arithmetic number, because the mean of its divisors is an integer number (126967951125).

Almost surely, 2^490942744321 is an apocalyptic number.

It is an amenable number.

490942744321 is a deficient number, since it is larger than the sum of its proper divisors (16929060179).

490942744321 is a wasteful number, since it uses less digits than its factorization.

490942744321 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16929060178.

The product of its (nonzero) digits is 1741824, while the sum is 49.

The spelling of 490942744321 in words is "four hundred ninety billion, nine hundred forty-two million, seven hundred forty-four thousand, three hundred twenty-one".