289046394 has 120 divisors (see below), whose sum is σ = 811666548. Its totient is φ = 76204800.

The previous prime is 289046377. The next prime is 289046399. The reversal of 289046394 is 493640982.

289046394 is a `hidden beast` number, since 2 + 8 + 9 + 0 + 4 + 639 + 4 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 278723025 + 10323369 = 16695^2 + 3213^2 .

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (289046399) by changing a digit.

It is a polite number, since it can be written in 59 ways as a sum of consecutive naturals, for example, 101794 + ... + 104594.

Almost surely, 2^289046394 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 289046394, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (405833274).

289046394 is an abundant number, since it is smaller than the sum of its proper divisors (522620154).

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

289046394 is a wasteful number, since it uses less digits than its factorization.

289046394 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2842 (or 2826 counting only the distinct ones).

The product of its (nonzero) digits is 373248, while the sum is 45.

The square root of 289046394 is about 17001.3644746532. The cubic root of 289046394 is about 661.1842786635.

It can be divided in two parts, 2890 and 46394, that added together give a square (49284 = 222²).

The spelling of 289046394 in words is "two hundred eighty-nine million, forty-six thousand, three hundred ninety-four".