99133409 has 8 divisors (see below), whose sum is σ = 105093288. Its totient is φ = 93187840.

The previous prime is 99133403. The next prime is 99133421. The reversal of 99133409 is 90433199.

It can be written as a sum of positive squares in 4 ways, for example, as 26832400 + 72301009 = 5180^2 + 8503^2 .

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

It is a cyclic number.

It is not a de Polignac number, because 99133409 - 2¹⁶ = 99067873 is a prime.

It is a super-2 number, since 2×99133409² = 19654865559922562, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99133403) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 12899 + ... + 19095.

It is an arithmetic number, because the mean of its divisors is an integer number (13136661).

Almost surely, 2^99133409 is an apocalyptic number.

It is an amenable number.

99133409 is a deficient number, since it is larger than the sum of its proper divisors (5959879).

99133409 is a wasteful number, since it uses less digits than its factorization.

99133409 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7155.

The product of its (nonzero) digits is 26244, while the sum is 38.

The square root of 99133409 is about 9956.5761685431. The cubic root of 99133409 is about 462.8142051922.

The spelling of 99133409 in words is "ninety-nine million, one hundred thirty-three thousand, four hundred nine".