69134809 has 2 divisors, whose sum is σ = 69134810. Its totient is φ = 69134808.

The previous prime is 69134773. The next prime is 69134837. The reversal of 69134809 is 90843196.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 39942400 + 29192409 = 6320^2 + 5403^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-69134809 is a prime.

It is not a weakly prime, because it can be changed into another prime (69134839) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 34567404 + 34567405.

It is an arithmetic number, because the mean of its divisors is an integer number (34567405).

Almost surely, 2^69134809 is an apocalyptic number.

It is an amenable number.

69134809 is a deficient number, since it is larger than the sum of its proper divisors (1).

69134809 is an equidigital number, since it uses as much as digits as its factorization.

69134809 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 46656, while the sum is 40.

The square root of 69134809 is about 8314.7344515625. The cubic root of 69134809 is about 410.4235341764.

The spelling of 69134809 in words is "sixty-nine million, one hundred thirty-four thousand, eight hundred nine".