289381616 has 20 divisors (see below), whose sum is σ = 593658432. Its totient is φ = 136179456.

The previous prime is 289381613. The next prime is 289381627. The reversal of 289381616 is 616183982.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289381613) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 531680 + ... + 532223.

Almost surely, 2^289381616 is an apocalyptic number.

It is an amenable number.

289381616 is an abundant number, since it is smaller than the sum of its proper divisors (304276816).

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

289381616 is a wasteful number, since it uses less digits than its factorization.

289381616 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1063928 (or 1063922 counting only the distinct ones).

The product of its digits is 124416, while the sum is 44.

The square root of 289381616 is about 17011.2202972038. The cubic root of 289381616 is about 661.4397830764.

The spelling of 289381616 in words is "two hundred eighty-nine million, three hundred eighty-one thousand, six hundred sixteen".