134688979 has 2 divisors, whose sum is σ = 134688980. Its totient is φ = 134688978.

The previous prime is 134688949. The next prime is 134689003. The reversal of 134688979 is 979886431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 134688979 - 2¹¹ = 134686931 is a prime.

It is a super-2 number, since 2×134688979² = 36282242128124882, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (134688949) 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 as a sum of consecutive naturals, namely, 67344489 + 67344490.

It is an arithmetic number, because the mean of its divisors is an integer number (67344490).

Almost surely, 2^134688979 is an apocalyptic number.

134688979 is a deficient number, since it is larger than the sum of its proper divisors (1).

134688979 is an equidigital number, since it uses as much as digits as its factorization.

134688979 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 2612736, while the sum is 55.

The square root of 134688979 is about 11605.5581080791. The cubic root of 134688979 is about 512.5985266849.

The spelling of 134688979 in words is "one hundred thirty-four million, six hundred eighty-eight thousand, nine hundred seventy-nine".