803395421 has 2 divisors, whose sum is σ = 803395422. Its totient is φ = 803395420.

The previous prime is 803395403. The next prime is 803395423. The reversal of 803395421 is 124593308.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 797215225 + 6180196 = 28235^2 + 2486^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-803395421 is a prime.

Together with 803395423, it forms a pair of twin primes.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (803395423) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 401697710 + 401697711.

It is an arithmetic number, because the mean of its divisors is an integer number (401697711).

Almost surely, 2^803395421 is an apocalyptic number.

It is an amenable number.

803395421 is a deficient number, since it is larger than the sum of its proper divisors (1).

803395421 is an equidigital number, since it uses as much as digits as its factorization.

803395421 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 25920, while the sum is 35.

The square root of 803395421 is about 28344.2308239261. The cubic root of 803395421 is about 929.6292587073.

The spelling of 803395421 in words is "eight hundred three million, three hundred ninety-five thousand, four hundred twenty-one".