134149979 has 4 divisors (see below), whose sum is σ = 135848160. Its totient is φ = 132451800.

The previous prime is 134149957. The next prime is 134149987. The reversal of 134149979 is 979941431.

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 134149979 - 2¹⁶ = 134084443 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (134149949) 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, 848972 + ... + 849129.

It is an arithmetic number, because the mean of its divisors is an integer number (33962040).

Almost surely, 2^134149979 is an apocalyptic number.

134149979 is a deficient number, since it is larger than the sum of its proper divisors (1698181).

134149979 is an equidigital number, since it uses as much as digits as its factorization.

134149979 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1698180.

The product of its digits is 244944, while the sum is 47.

The square root of 134149979 is about 11582.3131972849. The cubic root of 134149979 is about 511.9138381927.

The spelling of 134149979 in words is "one hundred thirty-four million, one hundred forty-nine thousand, nine hundred seventy-nine".