896802421 has 2 divisors, whose sum is σ = 896802422. Its totient is φ = 896802420.

The previous prime is 896802397. The next prime is 896802457. The reversal of 896802421 is 124208698.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 467856900 + 428945521 = 21630^2 + 20711^2 .

It is a cyclic number.

It is not a de Polignac number, because 896802421 - 2⁹ = 896801909 is a prime.

It is a super-2 number, since 2×896802421² = 1608509164622922482, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (896802461) 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, 448401210 + 448401211.

It is an arithmetic number, because the mean of its divisors is an integer number (448401211).

Almost surely, 2^896802421 is an apocalyptic number.

It is an amenable number.

896802421 is a deficient number, since it is larger than the sum of its proper divisors (1).

896802421 is an equidigital number, since it uses as much as digits as its factorization.

896802421 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 55296, while the sum is 40.

The square root of 896802421 is about 29946.6595966896. The cubic root of 896802421 is about 964.3446097967.

The spelling of 896802421 in words is "eight hundred ninety-six million, eight hundred two thousand, four hundred twenty-one".