99839290 has 8 divisors (see below), whose sum is σ = 179710740. Its totient is φ = 39935712.

The previous prime is 99839279. The next prime is 99839321. The reversal of 99839290 is 9293899.

It can be written as a sum of positive squares in 2 ways, for example, as 99380961 + 458329 = 9969^2 + 677^2 .

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

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 4991955 + ... + 4991974.

Almost surely, 2^99839290 is an apocalyptic number.

99839290 is a deficient number, since it is larger than the sum of its proper divisors (79871450).

99839290 is a wasteful number, since it uses less digits than its factorization.

99839290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9983936.

The product of its (nonzero) digits is 314928, while the sum is 49.

The square root of 99839290 is about 9991.9612689401. The cubic root of 99839290 is about 463.9101001266.

The spelling of 99839290 in words is "ninety-nine million, eight hundred thirty-nine thousand, two hundred ninety".