99321290 has 8 divisors (see below), whose sum is σ = 178778340. Its totient is φ = 39728512.

The previous prime is 99321289. The next prime is 99321319. The reversal of 99321290 is 9212399.

It can be written as a sum of positive squares in 2 ways, for example, as 99062209 + 259081 = 9953^2 + 509^2 .

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

It is a self number, because there is not a number n which added to its sum of digits gives 99321290.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4966055 + ... + 4966074.

Almost surely, 2^99321290 is an apocalyptic number.

99321290 is a deficient number, since it is larger than the sum of its proper divisors (79457050).

99321290 is a wasteful number, since it uses less digits than its factorization.

99321290 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 9932136.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 99321290 is about 9966.0067228554. The cubic root of 99321290 is about 463.1064010712.

The spelling of 99321290 in words is "ninety-nine million, three hundred twenty-one thousand, two hundred ninety".