289494860 has 24 divisors (see below), whose sum is σ = 609932400. Its totient is φ = 115418304.

The previous prime is 289494857. The next prime is 289494869. The reversal of 289494860 is 68494982.

It is a happy number.

It is a junction number, because it is equal to n+sod(n) for n = 289494799 and 289494808.

It is not an unprimeable number, because it can be changed into a prime (289494869) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 17435 + ... + 29714.

It is an arithmetic number, because the mean of its divisors is an integer number (25413850).

Almost surely, 2^289494860 is an apocalyptic number.

289494860 is a gapful number since it is divisible by the number (20) formed by its first and last digit.

It is an amenable number.

289494860 is an abundant number, since it is smaller than the sum of its proper divisors (320437540).

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

289494860 is a wasteful number, since it uses less digits than its factorization.

289494860 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 47465 (or 47463 counting only the distinct ones).

The product of its (nonzero) digits is 995328, while the sum is 50.

The square root of 289494860 is about 17014.5484806386. The cubic root of 289494860 is about 661.5260524568.

The spelling of 289494860 in words is "two hundred eighty-nine million, four hundred ninety-four thousand, eight hundred sixty".