134699549 has 4 divisors (see below), whose sum is σ = 134848320. Its totient is φ = 134550780.

The previous prime is 134699497. The next prime is 134699581. The reversal of 134699549 is 945996431.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 945996431 = 43 ⋅21999917.

It is a cyclic number.

It is not a de Polignac number, because 134699549 - 2¹⁶ = 134634013 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 134699497 and 134699506.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134699599) 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, 73019 + ... + 74840.

It is an arithmetic number, because the mean of its divisors is an integer number (33712080).

Almost surely, 2^134699549 is an apocalyptic number.

It is an amenable number.

134699549 is a deficient number, since it is larger than the sum of its proper divisors (148771).

134699549 is an equidigital number, since it uses as much as digits as its factorization.

134699549 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 148770.

The product of its digits is 1049760, while the sum is 50.

The square root of 134699549 is about 11606.0134843968. The cubic root of 134699549 is about 512.6119354155.

The spelling of 134699549 in words is "one hundred thirty-four million, six hundred ninety-nine thousand, five hundred forty-nine".