289049293 has 16 divisors (see below), whose sum is σ = 327322800. Its totient is φ = 253370880.

The previous prime is 289049287. The next prime is 289049297. The reversal of 289049293 is 392940982.

It can be written as a sum of positive squares in 8 ways, for example, as 5396329 + 283652964 = 2323^2 + 16842^2 .

It is a cyclic number.

It is not a de Polignac number, because 289049293 - 2¹³ = 289041101 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (289049297) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 16713 + ... + 29281.

It is an arithmetic number, because the mean of its divisors is an integer number (20457675).

Almost surely, 2^289049293 is an apocalyptic number.

It is an amenable number.

289049293 is a deficient number, since it is larger than the sum of its proper divisors (38273507).

289049293 is a wasteful number, since it uses less digits than its factorization.

289049293 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12672.

The product of its (nonzero) digits is 279936, while the sum is 46.

The square root of 289049293 is about 17001.4497323022. The cubic root of 289049293 is about 661.1864891123.

The spelling of 289049293 in words is "two hundred eighty-nine million, forty-nine thousand, two hundred ninety-three".