134480809 has 2 divisors, whose sum is σ = 134480810. Its totient is φ = 134480808.

The previous prime is 134480807. The next prime is 134480837. The reversal of 134480809 is 908084431.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 89965225 + 44515584 = 9485^2 + 6672^2 .

It is an emirp because it is prime and its reverse (908084431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134480809 - 2¹ = 134480807 is a prime.

Together with 134480807, it forms a pair of twin primes.

It is not a weakly prime, because it can be changed into another prime (134480807) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67240404 + 67240405.

It is an arithmetic number, because the mean of its divisors is an integer number (67240405).

Almost surely, 2^134480809 is an apocalyptic number.

It is an amenable number.

134480809 is a deficient number, since it is larger than the sum of its proper divisors (1).

134480809 is an equidigital number, since it uses as much as digits as its factorization.

134480809 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 27648, while the sum is 37.

The square root of 134480809 is about 11596.5860924670. The cubic root of 134480809 is about 512.3343064601.

The spelling of 134480809 in words is "one hundred thirty-four million, four hundred eighty thousand, eight hundred nine".