289717146 has 12 divisors (see below), whose sum is σ = 627720522. Its totient is φ = 96572376.

The previous prime is 289717139. The next prime is 289717147. The reversal of 289717146 is 641717982.

It is a happy number.

It can be written as a sum of positive squares in only one way, i.e., 237314025 + 52403121 = 15405^2 + 7239^2 .

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is not an unprimeable number, because it can be changed into a prime (289717147) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 8047681 + ... + 8047716.

Almost surely, 2^289717146 is an apocalyptic number.

289717146 is an abundant number, since it is smaller than the sum of its proper divisors (338003376).

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

289717146 is a wasteful number, since it uses less digits than its factorization.

289717146 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16095405 (or 16095402 counting only the distinct ones).

The product of its digits is 169344, while the sum is 45.

The square root of 289717146 is about 17021.0794604808. The cubic root of 289717146 is about 661.6953247307.

The spelling of 289717146 in words is "two hundred eighty-nine million, seven hundred seventeen thousand, one hundred forty-six".