134980591 has 2 divisors, whose sum is σ = 134980592. Its totient is φ = 134980590.

The previous prime is 134980543. The next prime is 134980597. The reversal of 134980591 is 195089431.

It is a strong prime.

It is an emirp because it is prime and its reverse (195089431) is a distict prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134980591 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (134980597) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67490295 + 67490296.

It is an arithmetic number, because the mean of its divisors is an integer number (67490296).

Almost surely, 2^134980591 is an apocalyptic number.

134980591 is a deficient number, since it is larger than the sum of its proper divisors (1).

134980591 is an equidigital number, since it uses as much as digits as its factorization.

134980591 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 38880, while the sum is 40.

The square root of 134980591 is about 11618.1147782246. The cubic root of 134980591 is about 512.9681984372.

The spelling of 134980591 in words is "one hundred thirty-four million, nine hundred eighty thousand, five hundred ninety-one".