134698387 has 4 divisors (see below), whose sum is σ = 137239920. Its totient is φ = 132156856.

The previous prime is 134698363. The next prime is 134698393. The reversal of 134698387 is 783896431.

It is a happy number.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 783896431 = 613 ⋅1278787.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-134698387 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 134698387.

It is not an unprimeable number, because it can be changed into a prime (134698337) 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, 1270687 + ... + 1270792.

It is an arithmetic number, because the mean of its divisors is an integer number (34309980).

Almost surely, 2^134698387 is an apocalyptic number.

134698387 is a deficient number, since it is larger than the sum of its proper divisors (2541533).

134698387 is an equidigital number, since it uses as much as digits as its factorization.

134698387 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2541532.

The product of its digits is 870912, while the sum is 49.

The square root of 134698387 is about 11605.9634240334. The cubic root of 134698387 is about 512.6104613775.

The spelling of 134698387 in words is "one hundred thirty-four million, six hundred ninety-eight thousand, three hundred eighty-seven".