289037869 has 2 divisors, whose sum is σ = 289037870. Its totient is φ = 289037868.

The previous prime is 289037783. The next prime is 289037891. The reversal of 289037869 is 968730982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 197739844 + 91298025 = 14062^2 + 9555^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289037869 is a prime.

It is a super-2 number, since 2×289037869² = 167085779432122322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289037069) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144518934 + 144518935.

It is an arithmetic number, because the mean of its divisors is an integer number (144518935).

Almost surely, 2^289037869 is an apocalyptic number.

It is an amenable number.

289037869 is a deficient number, since it is larger than the sum of its proper divisors (1).

289037869 is an equidigital number, since it uses as much as digits as its factorization.

289037869 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1306368, while the sum is 52.

The square root of 289037869 is about 17001.1137576336. The cubic root of 289037869 is about 661.1777783790.

The spelling of 289037869 in words is "two hundred eighty-nine million, thirty-seven thousand, eight hundred sixty-nine".