99090433 has 8 divisors (see below), whose sum is σ = 112990248. Its totient is φ = 86087424.

The previous prime is 99090427. The next prime is 99090437. The reversal of 99090433 is 33409099.

It can be written as a sum of positive squares in 4 ways, for example, as 28224 + 99062209 = 168^2 + 9953^2 .

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 99090433 - 2⁵ = 99090401 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 99090392 and 99090401.

It is not an unprimeable number, because it can be changed into a prime (99090437) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 223966 + ... + 224407.

It is an arithmetic number, because the mean of its divisors is an integer number (14123781).

It is a Proth number, since it is equal to 189 ⋅ 2¹⁹ + 1 and 189 < 2¹⁹.

Almost surely, 2^99090433 is an apocalyptic number.

It is an amenable number.

99090433 is a deficient number, since it is larger than the sum of its proper divisors (13899815).

99090433 is a wasteful number, since it uses less digits than its factorization.

99090433 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 448403.

The product of its (nonzero) digits is 26244, while the sum is 37.

The square root of 99090433 is about 9954.4177629834. The cubic root of 99090433 is about 462.7473162783.

The spelling of 99090433 in words is "ninety-nine million, ninety thousand, four hundred thirty-three".