99729109490 has 16 divisors (see below), whose sum is σ = 185702480280. Its totient is φ = 38516069760.

The previous prime is 99729109429. The next prime is 99729109511. The reversal of 99729109490 is 9490192799.

It can be written as a sum of positive squares in 4 ways, for example, as 63087875929 + 36641233561 = 251173^2 + 191419^2 .

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 171946451 + ... + 171947030.

Almost surely, 2^99729109490 is an apocalyptic number.

99729109490 is a deficient number, since it is larger than the sum of its proper divisors (85973370790).

99729109490 is a wasteful number, since it uses less digits than its factorization.

99729109490 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 343893517.

The product of its (nonzero) digits is 3306744, while the sum is 59.

The spelling of 99729109490 in words is "ninety-nine billion, seven hundred twenty-nine million, one hundred nine thousand, four hundred ninety".