289377397 has 2 divisors, whose sum is σ = 289377398. Its totient is φ = 289377396.

The previous prime is 289377371. The next prime is 289377479. The reversal of 289377397 is 793773982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 289034001 + 343396 = 17001^2 + 586^2 .

It is a cyclic number.

It is not a de Polignac number, because 289377397 - 2⁷ = 289377269 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289377337) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144688698 + 144688699.

It is an arithmetic number, because the mean of its divisors is an integer number (144688699).

Almost surely, 2^289377397 is an apocalyptic number.

It is an amenable number.

289377397 is a deficient number, since it is larger than the sum of its proper divisors (1).

289377397 is an equidigital number, since it uses as much as digits as its factorization.

289377397 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4000752, while the sum is 55.

The square root of 289377397 is about 17011.0962903629. The cubic root of 289377397 is about 661.4365686036.

The spelling of 289377397 in words is "two hundred eighty-nine million, three hundred seventy-seven thousand, three hundred ninety-seven".