134645779 has 2 divisors, whose sum is σ = 134645780. Its totient is φ = 134645778.

The previous prime is 134645759. The next prime is 134645789. The reversal of 134645779 is 977546431.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 134645779 - 2²¹ = 132548627 is a prime.

It is not a weakly prime, because it can be changed into another prime (134645759) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 67322889 + 67322890.

It is an arithmetic number, because the mean of its divisors is an integer number (67322890).

Almost surely, 2^134645779 is an apocalyptic number.

134645779 is a deficient number, since it is larger than the sum of its proper divisors (1).

134645779 is an equidigital number, since it uses as much as digits as its factorization.

134645779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 635040, while the sum is 46.

The square root of 134645779 is about 11603.6967816296. The cubic root of 134645779 is about 512.5437173891.

It can be divided in two parts, 134645 and 779, that added together give a square (135424 = 368²).

The spelling of 134645779 in words is "one hundred thirty-four million, six hundred forty-five thousand, seven hundred seventy-nine".