289748109 has 16 divisors (see below), whose sum is σ = 448760960. Its totient is φ = 162855360.

The previous prime is 289748099. The next prime is 289748117. The reversal of 289748109 is 901847982.

It is not a de Polignac number, because 289748109 - 2²³ = 281359501 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289748149) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 111814 + ... + 114375.

It is an arithmetic number, because the mean of its divisors is an integer number (28047560).

Almost surely, 2^289748109 is an apocalyptic number.

It is an amenable number.

289748109 is a deficient number, since it is larger than the sum of its proper divisors (159012851).

289748109 is a wasteful number, since it uses less digits than its factorization.

289748109 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 226260.

The product of its (nonzero) digits is 290304, while the sum is 48.

The square root of 289748109 is about 17021.9889848396. The cubic root of 289748109 is about 661.7188963911.

The spelling of 289748109 in words is "two hundred eighty-nine million, seven hundred forty-eight thousand, one hundred nine".