289158893 has 2 divisors, whose sum is σ = 289158894. Its totient is φ = 289158892.

The previous prime is 289158889. The next prime is 289158943. The reversal of 289158893 is 398851982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 172475689 + 116683204 = 13133^2 + 10802^2 .

It is a cyclic number.

It is not a de Polignac number, because 289158893 - 2² = 289158889 is a prime.

It is a super-2 number, since 2×289158893² = 167225730801970898, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289158193) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144579446 + 144579447.

It is an arithmetic number, because the mean of its divisors is an integer number (144579447).

Almost surely, 2^289158893 is an apocalyptic number.

It is an amenable number.

289158893 is a deficient number, since it is larger than the sum of its proper divisors (1).

289158893 is an equidigital number, since it uses as much as digits as its factorization.

289158893 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1244160, while the sum is 53.

The square root of 289158893 is about 17004.6726813544. The cubic root of 289158893 is about 661.2700468120.

The spelling of 289158893 in words is "two hundred eighty-nine million, one hundred fifty-eight thousand, eight hundred ninety-three".