34305989 has 2 divisors, whose sum is σ = 34305990. Its totient is φ = 34305988.

The previous prime is 34305967. The next prime is 34306007. The reversal of 34305989 is 98950343.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 34281025 + 24964 = 5855^2 + 158^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-34305989 is a prime.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (34305389) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17152994 + 17152995.

It is an arithmetic number, because the mean of its divisors is an integer number (17152995).

Almost surely, 2^34305989 is an apocalyptic number.

It is an amenable number.

34305989 is a deficient number, since it is larger than the sum of its proper divisors (1).

34305989 is an equidigital number, since it uses as much as digits as its factorization.

34305989 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 116640, while the sum is 41.

The square root of 34305989 is about 5857.1314651457. The cubic root of 34305989 is about 324.9301277799.

The spelling of 34305989 in words is "thirty-four million, three hundred five thousand, nine hundred eighty-nine".