73099729 has 4 divisors (see below), whose sum is σ = 73129140. Its totient is φ = 73070320.

The previous prime is 73099723. The next prime is 73099751. The reversal of 73099729 is 92799037.

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 52533504 + 20566225 = 7248^2 + 4535^2 .

It is a cyclic number.

It is not a de Polignac number, because 73099729 - 2⁷ = 73099601 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (73099723) 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, 10594 + ... + 16075.

It is an arithmetic number, because the mean of its divisors is an integer number (18282285).

Almost surely, 2^73099729 is an apocalyptic number.

It is an amenable number.

73099729 is a deficient number, since it is larger than the sum of its proper divisors (29411).

73099729 is a wasteful number, since it uses less digits than its factorization.

73099729 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 29410.

The product of its (nonzero) digits is 214326, while the sum is 46.

The square root of 73099729 is about 8549.8379516807. The cubic root of 73099729 is about 418.1241532720.

The spelling of 73099729 in words is "seventy-three million, ninety-nine thousand, seven hundred twenty-nine".