34189729 has 4 divisors (see below), whose sum is σ = 39073984. Its totient is φ = 29305476.

The previous prime is 34189711. The next prime is 34189741. The reversal of 34189729 is 92798143.

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: 92798143 = 5297 ⋅17519.

It is a cyclic number.

It is not a de Polignac number, because 34189729 - 2⁵ = 34189697 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34189709) 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, 2442117 + ... + 2442130.

It is an arithmetic number, because the mean of its divisors is an integer number (9768496).

Almost surely, 2^34189729 is an apocalyptic number.

It is an amenable number.

34189729 is a deficient number, since it is larger than the sum of its proper divisors (4884255).

34189729 is an equidigital number, since it uses as much as digits as its factorization.

34189729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4884254.

The product of its digits is 108864, while the sum is 43.

The square root of 34189729 is about 5847.1983889723. The cubic root of 34189729 is about 324.5626590872.

The spelling of 34189729 in words is "thirty-four million, one hundred eighty-nine thousand, seven hundred twenty-nine".