34149979 has 2 divisors, whose sum is σ = 34149980. Its totient is φ = 34149978.

The previous prime is 34149971. The next prime is 34149989. The reversal of 34149979 is 97994143.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 34149979 - 2³ = 34149971 is a prime.

It is not a weakly prime, because it can be changed into another prime (34149971) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 17074989 + 17074990.

It is an arithmetic number, because the mean of its divisors is an integer number (17074990).

Almost surely, 2^34149979 is an apocalyptic number.

34149979 is a deficient number, since it is larger than the sum of its proper divisors (1).

34149979 is an equidigital number, since it uses as much as digits as its factorization.

34149979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 244944, while the sum is 46.

The square root of 34149979 is about 5843.7983366985. The cubic root of 34149979 is about 324.4368282295.

The spelling of 34149979 in words is "thirty-four million, one hundred forty-nine thousand, nine hundred seventy-nine".