289806948 has 36 divisors (see below), whose sum is σ = 742891968. Its totient is φ = 95240880.

The previous prime is 289806931. The next prime is 289806949. The reversal of 289806948 is 849608982.

It is a tau number, because it is divible by the number of its divisors (36).

It is a junction number, because it is equal to n+sod(n) for n = 289806894 and 289806903.

It is not an unprimeable number, because it can be changed into a prime (289806949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 54136 + ... + 59247.

It is an arithmetic number, because the mean of its divisors is an integer number (20635888).

Almost surely, 2^289806948 is an apocalyptic number.

It is an amenable number.

289806948 is an abundant number, since it is smaller than the sum of its proper divisors (453085020).

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

289806948 is a wasteful number, since it uses less digits than its factorization.

289806948 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 113464 (or 113459 counting only the distinct ones).

The product of its (nonzero) digits is 1990656, while the sum is 54.

The square root of 289806948 is about 17023.7172203958. The cubic root of 289806948 is about 661.7636849985.

The spelling of 289806948 in words is "two hundred eighty-nine million, eight hundred six thousand, nine hundred forty-eight".