34042409 has 2 divisors, whose sum is σ = 34042410. Its totient is φ = 34042408.

The previous prime is 34042403. The next prime is 34042417. The reversal of 34042409 is 90424043.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 30030400 + 4012009 = 5480^2 + 2003^2 .

It is an emirp because it is prime and its reverse (90424043) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 34042409 - 2²⁰ = 32993833 is a prime.

It is a super-2 number, since 2×34042409² = 2317771221046562, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (34042403) 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, 17021204 + 17021205.

It is an arithmetic number, because the mean of its divisors is an integer number (17021205).

Almost surely, 2^34042409 is an apocalyptic number.

It is an amenable number.

34042409 is a deficient number, since it is larger than the sum of its proper divisors (1).

34042409 is an equidigital number, since it uses as much as digits as its factorization.

34042409 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 26.

The square root of 34042409 is about 5834.5873033146. The cubic root of 34042409 is about 324.0958189647.

The spelling of 34042409 in words is "thirty-four million, forty-two thousand, four hundred nine".