289138357 has 2 divisors, whose sum is σ = 289138358. Its totient is φ = 289138356.

The previous prime is 289138351. The next prime is 289138393. The reversal of 289138357 is 753831982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 197093521 + 92044836 = 14039^2 + 9594^2 .

It is a cyclic number.

It is not a de Polignac number, because 289138357 - 2³ = 289138349 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289138351) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144569178 + 144569179.

It is an arithmetic number, because the mean of its divisors is an integer number (144569179).

Almost surely, 2^289138357 is an apocalyptic number.

It is an amenable number.

289138357 is a deficient number, since it is larger than the sum of its proper divisors (1).

289138357 is an equidigital number, since it uses as much as digits as its factorization.

289138357 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 362880, while the sum is 46.

The square root of 289138357 is about 17004.0688366050. The cubic root of 289138357 is about 661.2543920244.

The spelling of 289138357 in words is "two hundred eighty-nine million, one hundred thirty-eight thousand, three hundred fifty-seven".