289749548 has 24 divisors (see below), whose sum is σ = 564931584. Its totient is φ = 128901200.

The previous prime is 289749533. The next prime is 289749617. The reversal of 289749548 is 845947982.

It is a junction number, because it is equal to n+sod(n) for n = 289749493 and 289749502.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 67988 + ... + 72123.

It is an arithmetic number, because the mean of its divisors is an integer number (23538816).

Almost surely, 2^289749548 is an apocalyptic number.

It is an amenable number.

289749548 is a deficient number, since it is larger than the sum of its proper divisors (275182036).

289749548 is a wasteful number, since it uses less digits than its factorization.

289749548 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140173 (or 140171 counting only the distinct ones).

The product of its digits is 5806080, while the sum is 56.

The square root of 289749548 is about 17022.0312536430. The cubic root of 289749548 is about 661.7199918390.

The spelling of 289749548 in words is "two hundred eighty-nine million, seven hundred forty-nine thousand, five hundred forty-eight".