99729091 has 8 divisors (see below), whose sum is σ = 124337664. Its totient is φ = 77710920.

The previous prime is 99729067. The next prime is 99729103. The reversal of 99729091 is 19092799.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 99729091 - 2¹³ = 99720899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99729011) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 647515 + ... + 647668.

It is an arithmetic number, because the mean of its divisors is an integer number (15542208).

Almost surely, 2^99729091 is an apocalyptic number.

99729091 is a deficient number, since it is larger than the sum of its proper divisors (24608573).

99729091 is a wasteful number, since it uses less digits than its factorization.

99729091 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1295201.

The product of its (nonzero) digits is 91854, while the sum is 46.

The square root of 99729091 is about 9986.4453635916. The cubic root of 99729091 is about 463.7393548897.

The spelling of 99729091 in words is "ninety-nine million, seven hundred twenty-nine thousand, ninety-one".