896390489 has 2 divisors, whose sum is σ = 896390490. Its totient is φ = 896390488.

The previous prime is 896390479. The next prime is 896390491. The reversal of 896390489 is 984093698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 688800025 + 207590464 = 26245^2 + 14408^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-896390489 is a prime.

Together with 896390491, it forms a pair of twin primes.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (896390459) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 448195244 + 448195245.

It is an arithmetic number, because the mean of its divisors is an integer number (448195245).

Almost surely, 2^896390489 is an apocalyptic number.

It is an amenable number.

896390489 is a deficient number, since it is larger than the sum of its proper divisors (1).

896390489 is an equidigital number, since it uses as much as digits as its factorization.

896390489 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3359232, while the sum is 56.

The square root of 896390489 is about 29939.7810446236. The cubic root of 896390489 is about 964.1969350385.

The spelling of 896390489 in words is "eight hundred ninety-six million, three hundred ninety thousand, four hundred eighty-nine".