134531979 has 4 divisors (see below), whose sum is σ = 179375976. Its totient is φ = 89687984.

The previous prime is 134531953. The next prime is 134531983. The reversal of 134531979 is 979135431.

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

It is a cyclic number.

It is not a de Polignac number, because 134531979 - 2¹⁶ = 134466443 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 134531979.

It is not an unprimeable number, because it can be changed into a prime (134531939) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 22421994 + ... + 22421999.

It is an arithmetic number, because the mean of its divisors is an integer number (44843994).

Almost surely, 2^134531979 is an apocalyptic number.

134531979 is a deficient number, since it is larger than the sum of its proper divisors (44843997).

134531979 is an equidigital number, since it uses as much as digits as its factorization.

134531979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44843996.

The product of its digits is 102060, while the sum is 42.

The square root of 134531979 is about 11598.7921353907. The cubic root of 134531979 is about 512.3992793542.

The spelling of 134531979 in words is "one hundred thirty-four million, five hundred thirty-one thousand, nine hundred seventy-nine".