489685969405 has 4 divisors (see below), whose sum is σ = 587623163292. Its totient is φ = 391748775520.

The previous prime is 489685969369. The next prime is 489685969427. The reversal of 489685969405 is 504969586984.

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 172954510884 + 316731458521 = 415878^2 + 562789^2 .

It is not a de Polignac number, because 489685969405 - 2²¹ = 489683872253 is a prime.

It is a super-2 number, since 2×489685969405² (a number of 24 digits) contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 48968596936 + ... + 48968596945.

It is an arithmetic number, because the mean of its divisors is an integer number (146905790823).

Almost surely, 2^489685969405 is an apocalyptic number.

It is an amenable number.

489685969405 is a deficient number, since it is larger than the sum of its proper divisors (97937193887).

489685969405 is an equidigital number, since it uses as much as digits as its factorization.

489685969405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97937193886.

The product of its (nonzero) digits is 671846400, while the sum is 73.

The spelling of 489685969405 in words is "four hundred eighty-nine billion, six hundred eighty-five million, nine hundred sixty-nine thousand, four hundred five".