834493421 has 2 divisors, whose sum is σ = 834493422. Its totient is φ = 834493420.

The previous prime is 834493417. The next prime is 834493453. The reversal of 834493421 is 124394438.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 821968900 + 12524521 = 28670^2 + 3539^2 .

It is a cyclic number.

It is not a de Polignac number, because 834493421 - 2² = 834493417 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (834498421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 417246710 + 417246711.

It is an arithmetic number, because the mean of its divisors is an integer number (417246711).

Almost surely, 2^834493421 is an apocalyptic number.

It is an amenable number.

834493421 is a deficient number, since it is larger than the sum of its proper divisors (1).

834493421 is an equidigital number, since it uses as much as digits as its factorization.

834493421 is an evil number, because the sum of its binary digits is even.

The product of its digits is 82944, while the sum is 38.

The square root of 834493421 is about 28887.5997791440. The cubic root of 834493421 is about 941.4725001221.

The spelling of 834493421 in words is "eight hundred thirty-four million, four hundred ninety-three thousand, four hundred twenty-one".