489984899846401 has 4 divisors (see below), whose sum is σ = 491182906936900. Its totient is φ = 488786892755904.

The previous prime is 489984899846369. The next prime is 489984899846411. The reversal of 489984899846401 is 104648998489984.

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 233195011484176 + 256789888362225 = 15270724^2 + 16024665^2 .

It is a cyclic number.

It is not a de Polignac number, because 489984899846401 - 2⁵ = 489984899846369 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 489984899846297 and 489984899846306.

It is not an unprimeable number, because it can be changed into a prime (489984899846411) 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, 599003544636 + ... + 599003545453.

It is an arithmetic number, because the mean of its divisors is an integer number (122795726734225).

Almost surely, 2^{489984899846401} is an apocalyptic number.

It is an amenable number.

489984899846401 is a deficient number, since it is larger than the sum of its proper divisors (1198007090499).

489984899846401 is a wasteful number, since it uses less digits than its factorization.

489984899846401 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1198007090498.

The product of its (nonzero) digits is 41278242816, while the sum is 91.

The spelling of 489984899846401 in words is "four hundred eighty-nine trillion, nine hundred eighty-four billion, eight hundred ninety-nine million, eight hundred forty-six thousand, four hundred one".