289896749 has 2 divisors, whose sum is σ = 289896750. Its totient is φ = 289896748.

The previous prime is 289896743. The next prime is 289896757. The reversal of 289896749 is 947698982.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 232410025 + 57486724 = 15245^2 + 7582^2 .

It is a cyclic number.

It is not a de Polignac number, because 289896749 - 2⁸ = 289896493 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 289896691 and 289896700.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (289896743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 144948374 + 144948375.

It is an arithmetic number, because the mean of its divisors is an integer number (144948375).

Almost surely, 2^289896749 is an apocalyptic number.

It is an amenable number.

289896749 is a deficient number, since it is larger than the sum of its proper divisors (1).

289896749 is an equidigital number, since it uses as much as digits as its factorization.

289896749 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 15676416, while the sum is 62.

The square root of 289896749 is about 17026.3545422971. The cubic root of 289896749 is about 661.8320303850.

The spelling of 289896749 in words is "two hundred eighty-nine million, eight hundred ninety-six thousand, seven hundred forty-nine".