134672009 has 2 divisors, whose sum is σ = 134672010. Its totient is φ = 134672008.

The previous prime is 134671961. The next prime is 134672033. The reversal of 134672009 is 900276431.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 114169225 + 20502784 = 10685^2 + 4528^2 .

It is an emirp because it is prime and its reverse (900276431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134672009 - 2²⁰ = 133623433 is a prime.

It is not a weakly prime, because it can be changed into another prime (134672039) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67336004 + 67336005.

It is an arithmetic number, because the mean of its divisors is an integer number (67336005).

Almost surely, 2^134672009 is an apocalyptic number.

It is an amenable number.

134672009 is a deficient number, since it is larger than the sum of its proper divisors (1).

134672009 is an equidigital number, since it uses as much as digits as its factorization.

134672009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 9072, while the sum is 32.

The square root of 134672009 is about 11604.8269698432. The cubic root of 134672009 is about 512.5769976719.

The spelling of 134672009 in words is "one hundred thirty-four million, six hundred seventy-two thousand, nine".