289871334956 has 48 divisors (see below), whose sum is σ = 582701693952. Its totient is φ = 123596928000.

The previous prime is 289871334943. The next prime is 289871334971. The reversal of 289871334956 is 659433178982.

It is a junction number, because it is equal to n+sod(n) for n = 289871334892 and 289871334901.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 20121356 + ... + 20135756.

It is an arithmetic number, because the mean of its divisors is an integer number (12139618624).

Almost surely, 2^289871334956 is an apocalyptic number.

It is an amenable number.

289871334956 is an abundant number, since it is smaller than the sum of its proper divisors (292830358996).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

289871334956 is a wasteful number, since it uses less digits than its factorization.

289871334956 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 18030 (or 18028 counting only the distinct ones).

The product of its digits is 78382080, while the sum is 65.

The spelling of 289871334956 in words is "two hundred eighty-nine billion, eight hundred seventy-one million, three hundred thirty-four thousand, nine hundred fifty-six".