134078909 has 2 divisors, whose sum is σ = 134078910. Its totient is φ = 134078908.

The previous prime is 134078899. The next prime is 134078933. The reversal of 134078909 is 909870431.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 130759225 + 3319684 = 11435^2 + 1822^2 .

It is an emirp because it is prime and its reverse (909870431) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 134078909 - 2²⁴ = 117301693 is a prime.

It is equal to p_7596167 and since 134078909 and 7596167 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134078209) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67039454 + 67039455.

It is an arithmetic number, because the mean of its divisors is an integer number (67039455).

Almost surely, 2^134078909 is an apocalyptic number.

It is an amenable number.

134078909 is a deficient number, since it is larger than the sum of its proper divisors (1).

134078909 is an equidigital number, since it uses as much as digits as its factorization.

134078909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 54432, while the sum is 41.

The square root of 134078909 is about 11579.2447508462. The cubic root of 134078909 is about 511.8234216221.

The spelling of 134078909 in words is "one hundred thirty-four million, seventy-eight thousand, nine hundred nine".