289691377 has 2 divisors, whose sum is σ = 289691378. Its totient is φ = 289691376.

The previous prime is 289691359. The next prime is 289691383. The reversal of 289691377 is 773196982.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 271722256 + 17969121 = 16484^2 + 4239^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-289691377 is a prime.

It is a super-2 number, since 2×289691377² = 167842187816312258, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (289691327) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144845688 + 144845689.

It is an arithmetic number, because the mean of its divisors is an integer number (144845689).

Almost surely, 2^289691377 is an apocalyptic number.

It is an amenable number.

289691377 is a deficient number, since it is larger than the sum of its proper divisors (1).

289691377 is an equidigital number, since it uses as much as digits as its factorization.

289691377 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 1143072, while the sum is 52.

The square root of 289691377 is about 17020.3224705057. The cubic root of 289691377 is about 661.6757059029.

The spelling of 289691377 in words is "two hundred eighty-nine million, six hundred ninety-one thousand, three hundred seventy-seven".