134688899 has 4 divisors (see below), whose sum is σ = 134794680. Its totient is φ = 134583120.

The previous prime is 134688889. The next prime is 134688901. The reversal of 134688899 is 998886431.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 998886431 = 43 ⋅23229917.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134688899 is a prime.

It is a Duffinian number.

It is a plaindrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (134688839) 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, 50957 + ... + 53534.

It is an arithmetic number, because the mean of its divisors is an integer number (33698670).

Almost surely, 2^134688899 is an apocalyptic number.

134688899 is a deficient number, since it is larger than the sum of its proper divisors (105781).

134688899 is a wasteful number, since it uses less digits than its factorization.

134688899 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105780.

The product of its digits is 2985984, while the sum is 56.

The square root of 134688899 is about 11605.5546614541. The cubic root of 134688899 is about 512.5984251970.

The spelling of 134688899 in words is "one hundred thirty-four million, six hundred eighty-eight thousand, eight hundred ninety-nine".