134974639 has 4 divisors (see below), whose sum is σ = 137187400. Its totient is φ = 132761880.

The previous prime is 134974633. The next prime is 134974643. The reversal of 134974639 is 936479431.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 134974639 - 2⁵ = 134974607 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (134974633) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1106289 + ... + 1106410.

It is an arithmetic number, because the mean of its divisors is an integer number (34296850).

Almost surely, 2^134974639 is an apocalyptic number.

134974639 is a deficient number, since it is larger than the sum of its proper divisors (2212761).

134974639 is an equidigital number, since it uses as much as digits as its factorization.

134974639 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2212760.

The product of its digits is 489888, while the sum is 46.

The square root of 134974639 is about 11617.8586236879. The cubic root of 134974639 is about 512.9606585098.

The spelling of 134974639 in words is "one hundred thirty-four million, nine hundred seventy-four thousand, six hundred thirty-nine".