34523729 has 4 divisors (see below), whose sum is σ = 34652340. Its totient is φ = 34395120.

The previous prime is 34523689. The next prime is 34523737. The reversal of 34523729 is 92732543.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16418704 + 18105025 = 4052^2 + 4255^2 .

It is a cyclic number.

It is not a de Polignac number, because 34523729 - 2⁸ = 34523473 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (34523029) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63902 + ... + 64439.

It is an arithmetic number, because the mean of its divisors is an integer number (8663085).

Almost surely, 2^34523729 is an apocalyptic number.

It is an amenable number.

34523729 is a deficient number, since it is larger than the sum of its proper divisors (128611).

34523729 is a wasteful number, since it uses less digits than its factorization.

34523729 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 128610.

The product of its digits is 45360, while the sum is 35.

The square root of 34523729 is about 5875.6896616482. The cubic root of 34523729 is about 325.6161219724.

The spelling of 34523729 in words is "thirty-four million, five hundred twenty-three thousand, seven hundred twenty-nine".