289920709090 has 8 divisors (see below), whose sum is σ = 521857276380. Its totient is φ = 115968283632.

The previous prime is 289920709063. The next prime is 289920709147. The reversal of 289920709090 is 90907029982.

It can be written as a sum of positive squares in 2 ways, for example, as 272503836361 + 17416872729 = 522019^2 + 131973^2 .

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

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, 14496035445 + ... + 14496035464.

Almost surely, 2^289920709090 is an apocalyptic number.

289920709090 is a deficient number, since it is larger than the sum of its proper divisors (231936567290).

289920709090 is a wasteful number, since it uses less digits than its factorization.

289920709090 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 28992070916.

The product of its (nonzero) digits is 1469664, while the sum is 55.

The spelling of 289920709090 in words is "two hundred eighty-nine billion, nine hundred twenty million, seven hundred nine thousand, ninety".