289169685 has 96 divisors (see below), whose sum is σ = 603832320. Its totient is φ = 125161344.

The previous prime is 289169663. The next prime is 289169687. The reversal of 289169685 is 586961982.

It is a happy number.

It is not a de Polignac number, because 289169685 - 2⁷ = 289169557 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289169687) by changing a digit.

It is a polite number, since it can be written in 95 ways as a sum of consecutive naturals, for example, 1209796 + ... + 1210034.

It is an arithmetic number, because the mean of its divisors is an integer number (6289920).

Almost surely, 2^289169685 is an apocalyptic number.

It is an amenable number.

289169685 is an abundant number, since it is smaller than the sum of its proper divisors (314662635).

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

289169685 is a wasteful number, since it uses less digits than its factorization.

289169685 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 447 (or 444 counting only the distinct ones).

The product of its digits is 1866240, while the sum is 54.

The square root of 289169685 is about 17004.9900029374. The cubic root of 289169685 is about 661.2782733589.

The spelling of 289169685 in words is "two hundred eighty-nine million, one hundred sixty-nine thousand, six hundred eighty-five".