289389834 has 20 divisors (see below), whose sum is σ = 648447954. Its totient is φ = 96463224.

The previous prime is 289389809. The next prime is 289389847. The reversal of 289389834 is 438983982.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 282340809 + 7049025 = 16803^2 + 2655^2 .

It is a Harshad number since it is a multiple of its sum of digits (54).

It is an unprimeable number.

It is a polite number, since it can be written in 9 ways as a sum of consecutive naturals, for example, 893017 + ... + 893340.

Almost surely, 2^289389834 is an apocalyptic number.

289389834 is an abundant number, since it is smaller than the sum of its proper divisors (359058120).

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

289389834 is a wasteful number, since it uses less digits than its factorization.

289389834 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1786371 (or 1786362 counting only the distinct ones).

The product of its digits is 2985984, while the sum is 54.

The square root of 289389834 is about 17011.4618419464. The cubic root of 289389834 is about 661.4460443135.

The spelling of 289389834 in words is "two hundred eighty-nine million, three hundred eighty-nine thousand, eight hundred thirty-four".