896239649 has 2 divisors, whose sum is σ = 896239650. Its totient is φ = 896239648.

The previous prime is 896239579. The next prime is 896239651. The reversal of 896239649 is 946932698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 896104225 + 135424 = 29935^2 + 368^2 .

It is a cyclic number.

It is not a de Polignac number, because 896239649 - 2²⁴ = 879462433 is a prime.

Together with 896239651, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 896239594 and 896239603.

It is not a weakly prime, because it can be changed into another prime (896239679) 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, 448119824 + 448119825.

It is an arithmetic number, because the mean of its divisors is an integer number (448119825).

Almost surely, 2^896239649 is an apocalyptic number.

It is an amenable number.

896239649 is a deficient number, since it is larger than the sum of its proper divisors (1).

896239649 is an equidigital number, since it uses as much as digits as its factorization.

896239649 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5038848, while the sum is 56.

The square root of 896239649 is about 29937.2618821428. The cubic root of 896239649 is about 964.1428486308.

The spelling of 896239649 in words is "eight hundred ninety-six million, two hundred thirty-nine thousand, six hundred forty-nine".