134639493 has 24 divisors (see below), whose sum is σ = 192125472. Its totient is φ = 83817888.

The previous prime is 134639471. The next prime is 134639497. The reversal of 134639493 is 394936431.

It is not a de Polignac number, because 134639493 - 2⁸ = 134639237 is a prime.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134639497) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67255 + ... + 69227.

It is an arithmetic number, because the mean of its divisors is an integer number (8005228).

Almost surely, 2^134639493 is an apocalyptic number.

It is an amenable number.

134639493 is a deficient number, since it is larger than the sum of its proper divisors (57485979).

134639493 is a wasteful number, since it uses less digits than its factorization.

134639493 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2065 (or 2042 counting only the distinct ones).

The product of its digits is 209952, while the sum is 42.

The square root of 134639493 is about 11603.4259165128. The cubic root of 134639493 is about 512.5357411521.

The spelling of 134639493 in words is "one hundred thirty-four million, six hundred thirty-nine thousand, four hundred ninety-three".