134809949 has 4 divisors (see below), whose sum is σ = 142739964. Its totient is φ = 126879936.

The previous prime is 134809919. The next prime is 134809957. The reversal of 134809949 is 949908431.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 55279225 + 79530724 = 7435^2 + 8918^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134809949 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134809919) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3964982 + ... + 3965015.

It is an arithmetic number, because the mean of its divisors is an integer number (35684991).

Almost surely, 2^134809949 is an apocalyptic number.

It is an amenable number.

134809949 is a deficient number, since it is larger than the sum of its proper divisors (7930015).

134809949 is an equidigital number, since it uses as much as digits as its factorization.

134809949 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7930014.

The product of its (nonzero) digits is 279936, while the sum is 47.

The square root of 134809949 is about 11610.7686653382. The cubic root of 134809949 is about 512.7519430697.

The spelling of 134809949 in words is "one hundred thirty-four million, eight hundred nine thousand, nine hundred forty-nine".