135729469 has 4 divisors (see below), whose sum is σ = 136706080. Its totient is φ = 134752860.

The previous prime is 135729443. The next prime is 135729487. The reversal of 135729469 is 964927531.

It is a happy number.

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.

It is a cyclic number.

It is not a de Polignac number, because 135729469 - 2⁵ = 135729437 is a prime.

It is a super-2 number, since 2×135729469² = 36844977510043922, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (135729409) 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, 488097 + ... + 488374.

It is an arithmetic number, because the mean of its divisors is an integer number (34176520).

Almost surely, 2^135729469 is an apocalyptic number.

It is an amenable number.

135729469 is a deficient number, since it is larger than the sum of its proper divisors (976611).

135729469 is an equidigital number, since it uses as much as digits as its factorization.

135729469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 976610.

The product of its digits is 408240, while the sum is 46.

The square root of 135729469 is about 11650.2990948731. The cubic root of 135729469 is about 513.9151058146.

The spelling of 135729469 in words is "one hundred thirty-five million, seven hundred twenty-nine thousand, four hundred sixty-nine".