34146821 has 2 divisors, whose sum is σ = 34146822. Its totient is φ = 34146820.

The previous prime is 34146799. The next prime is 34146823. The reversal of 34146821 is 12864143.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34093921 + 52900 = 5839^2 + 230^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34146821 is a prime.

Together with 34146823, 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 (34146823) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17073410 + 17073411.

It is an arithmetic number, because the mean of its divisors is an integer number (17073411).

Almost surely, 2^34146821 is an apocalyptic number.

It is an amenable number.

34146821 is a deficient number, since it is larger than the sum of its proper divisors (1).

34146821 is an equidigital number, since it uses as much as digits as its factorization.

34146821 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4608, while the sum is 29.

The square root of 34146821 is about 5843.5281294779. The cubic root of 34146821 is about 324.4268272172.

The spelling of 34146821 in words is "thirty-four million, one hundred forty-six thousand, eight hundred twenty-one".