289749546 has 12 divisors (see below), whose sum is σ = 627790722. Its totient is φ = 96583176.

The previous prime is 289749533. The next prime is 289749617. The reversal of 289749546 is 645947982.

289749546 is a `hidden beast` number, since 2 + 8 + 97 + 4 + 9 + 546 = 666.

It can be written as a sum of positive squares in only one way, i.e., 172265625 + 117483921 = 13125^2 + 10839^2 .

It is a super-2 number, since 2×289749546² = 167909598814412232, which contains 22 as substring.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 289749492 and 289749501.

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8048581 + ... + 8048616.

Almost surely, 2^289749546 is an apocalyptic number.

289749546 is an abundant number, since it is smaller than the sum of its proper divisors (338041176).

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

289749546 is a wasteful number, since it uses less digits than its factorization.

289749546 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16097205 (or 16097202 counting only the distinct ones).

The product of its digits is 4354560, while the sum is 54.

The square root of 289749546 is about 17022.0311948956. The cubic root of 289749546 is about 661.7199903165.

The spelling of 289749546 in words is "two hundred eighty-nine million, seven hundred forty-nine thousand, five hundred forty-six".