99729717 has 4 divisors (see below), whose sum is σ = 132972960. Its totient is φ = 66486476.

The previous prime is 99729713. The next prime is 99729719. The reversal of 99729717 is 71792799.

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 99729717 - 2² = 99729713 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99729717.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99729713) 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, 16621617 + ... + 16621622.

It is an arithmetic number, because the mean of its divisors is an integer number (33243240).

Almost surely, 2^99729717 is an apocalyptic number.

It is an amenable number.

99729717 is a deficient number, since it is larger than the sum of its proper divisors (33243243).

99729717 is a wasteful number, since it uses less digits than its factorization.

99729717 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 33243242.

The product of its digits is 500094, while the sum is 51.

The square root of 99729717 is about 9986.4767060260. The cubic root of 99729717 is about 463.7403251857.

The spelling of 99729717 in words is "ninety-nine million, seven hundred twenty-nine thousand, seven hundred seventeen".