489790169621 has 8 divisors (see below), whose sum is σ = 506686591488. Its totient is φ = 472962294000.

The previous prime is 489790169611. The next prime is 489790169629. The reversal of 489790169621 is 126961097984.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-489790169621 is a prime.

It is a super-3 number, since 3×489790169621³ (a number of 36 digits) contains 333 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (489790169629) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17122025 + ... + 17150606.

It is an arithmetic number, because the mean of its divisors is an integer number (63335823936).

Almost surely, 2^489790169621 is an apocalyptic number.

It is an amenable number.

489790169621 is a deficient number, since it is larger than the sum of its proper divisors (16896421867).

489790169621 is a wasteful number, since it uses less digits than its factorization.

489790169621 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 34273123.

The product of its (nonzero) digits is 11757312, while the sum is 62.

The spelling of 489790169621 in words is "four hundred eighty-nine billion, seven hundred ninety million, one hundred sixty-nine thousand, six hundred twenty-one".