135958493 has 4 divisors (see below), whose sum is σ = 148318368. Its totient is φ = 123598620.

The previous prime is 135958457. The next prime is 135958499. The reversal of 135958493 is 394859531.

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: 394859531 = 11 ⋅35896321.

It is a cyclic number.

It is not a de Polignac number, because 135958493 - 2⁶ = 135958429 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 (135958499) 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, 6179921 + ... + 6179942.

It is an arithmetic number, because the mean of its divisors is an integer number (37079592).

Almost surely, 2^135958493 is an apocalyptic number.

It is an amenable number.

135958493 is a deficient number, since it is larger than the sum of its proper divisors (12359875).

135958493 is a wasteful number, since it uses less digits than its factorization.

135958493 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 12359874.

The product of its digits is 583200, while the sum is 47.

The square root of 135958493 is about 11660.1240559438. The cubic root of 135958493 is about 514.2039960511.

The spelling of 135958493 in words is "one hundred thirty-five million, nine hundred fifty-eight thousand, four hundred ninety-three".