34208921 has 2 divisors, whose sum is σ = 34208922. Its totient is φ = 34208920.

The previous prime is 34208917. The next prime is 34208957. The reversal of 34208921 is 12980243.

34208921 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 28472896 + 5736025 = 5336^2 + 2395^2 .

It is a cyclic number.

It is not a de Polignac number, because 34208921 - 2² = 34208917 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (34208971) 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, 17104460 + 17104461.

It is an arithmetic number, because the mean of its divisors is an integer number (17104461).

Almost surely, 2^34208921 is an apocalyptic number.

It is an amenable number.

34208921 is a deficient number, since it is larger than the sum of its proper divisors (1).

34208921 is an equidigital number, since it uses as much as digits as its factorization.

34208921 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3456, while the sum is 29.

The square root of 34208921 is about 5848.8392865593. The cubic root of 34208921 is about 324.6233775307.

The spelling of 34208921 in words is "thirty-four million, two hundred eight thousand, nine hundred twenty-one".