34185729 has 4 divisors (see below), whose sum is σ = 45580976. Its totient is φ = 22790484.

The previous prime is 34185713. The next prime is 34185757. The reversal of 34185729 is 92758143.

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: 92758143 = 3 ⋅30919381.

It is not a de Polignac number, because 34185729 - 2⁴ = 34185713 is a prime.

It is a super-2 number, since 2×34185729² = 2337328134522882, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34185329) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5697619 + ... + 5697624.

It is an arithmetic number, because the mean of its divisors is an integer number (11395244).

Almost surely, 2^34185729 is an apocalyptic number.

It is an amenable number.

34185729 is a deficient number, since it is larger than the sum of its proper divisors (11395247).

34185729 is a wasteful number, since it uses less digits than its factorization.

34185729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11395246.

The product of its digits is 60480, while the sum is 39.

The square root of 34185729 is about 5846.8563348179. The cubic root of 34185729 is about 324.5500012773.

The spelling of 34185729 in words is "thirty-four million, one hundred eighty-five thousand, seven hundred twenty-nine".