134478679 has 4 divisors (see below), whose sum is σ = 134520976. Its totient is φ = 134436384.

The previous prime is 134478671. The next prime is 134478689. The reversal of 134478679 is 976874431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 976874431 = 13 ⋅75144187.

It is a cyclic number.

It is not a de Polignac number, because 134478679 - 2³ = 134478671 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 (134478671) 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, 15954 + ... + 22879.

It is an arithmetic number, because the mean of its divisors is an integer number (33630244).

Almost surely, 2^134478679 is an apocalyptic number.

134478679 is a deficient number, since it is larger than the sum of its proper divisors (42297).

134478679 is an equidigital number, since it uses as much as digits as its factorization.

134478679 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 42296.

The product of its digits is 1016064, while the sum is 49.

The square root of 134478679 is about 11596.4942547306. The cubic root of 134478679 is about 512.3316015442.

The spelling of 134478679 in words is "one hundred thirty-four million, four hundred seventy-eight thousand, six hundred seventy-nine".