99990133 has 4 divisors (see below), whose sum is σ = 100012428. Its totient is φ = 99967840.

The previous prime is 99990113. The next prime is 99990139. The reversal of 99990133 is 33109999.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 9778129 + 90212004 = 3127^2 + 9498^2 .

It is a cyclic number.

It is not a de Polignac number, because 99990133 - 2¹³ = 99981941 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 99990133.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99990139) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1816 + ... + 14257.

It is an arithmetic number, because the mean of its divisors is an integer number (25003107).

Almost surely, 2^99990133 is an apocalyptic number.

It is an amenable number.

99990133 is a deficient number, since it is larger than the sum of its proper divisors (22295).

99990133 is a wasteful number, since it uses less digits than its factorization.

99990133 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 22294.

The product of its (nonzero) digits is 59049, while the sum is 43.

The square root of 99990133 is about 9999.5066378297. The cubic root of 99990133 is about 464.1436166735.

The spelling of 99990133 in words is "ninety-nine million, nine hundred ninety thousand, one hundred thirty-three".