896921 has 2 divisors, whose sum is σ = 896922. Its totient is φ = 896920.

The previous prime is 896897. The next prime is 896927. The reversal of 896921 is 129698.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 698896 + 198025 = 836^2 + 445^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-896921 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is an alternating number because its digits alternate between even and odd.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (896927) 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, 448460 + 448461.

It is an arithmetic number, because the mean of its divisors is an integer number (448461).

2⁸⁹⁶⁹²¹ is an apocalyptic number.

It is an amenable number.

896921 is a deficient number, since it is larger than the sum of its proper divisors (1).

896921 is an equidigital number, since it uses as much as digits as its factorization.

896921 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 7776, while the sum is 35.

The square root of 896921 is about 947.0591322615. The cubic root of 896921 is about 96.4387111161.

The spelling of 896921 in words is "eight hundred ninety-six thousand, nine hundred twenty-one".