289741973 has 4 divisors (see below), whose sum is σ = 291686700. Its totient is φ = 287797248.

The previous prime is 289741939. The next prime is 289741993. The reversal of 289741973 is 379147982.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 63329764 + 226412209 = 7958^2 + 15047^2 .

It is a cyclic number.

It is not a de Polignac number, because 289741973 - 2¹⁰ = 289740949 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 (289741993) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 972140 + ... + 972437.

It is an arithmetic number, because the mean of its divisors is an integer number (72921675).

Almost surely, 2^289741973 is an apocalyptic number.

It is an amenable number.

289741973 is a deficient number, since it is larger than the sum of its proper divisors (1944727).

289741973 is a wasteful number, since it uses less digits than its factorization.

289741973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1944726.

The product of its digits is 762048, while the sum is 50.

The square root of 289741973 is about 17021.8087464288. The cubic root of 289741973 is about 661.7142252811.

The spelling of 289741973 in words is "two hundred eighty-nine million, seven hundred forty-one thousand, nine hundred seventy-three".