90433213 has 4 divisors (see below), whose sum is σ = 97389628. Its totient is φ = 83476800.

The previous prime is 90433207. The next prime is 90433237. The reversal of 90433213 is 31233409.

It is a happy number.

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 23406244 + 67026969 = 4838^2 + 8187^2 .

It is a cyclic number.

It is not a de Polignac number, because 90433213 - 2⁵ = 90433181 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90433283) by changing a digit.

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, 3478188 + ... + 3478213.

It is an arithmetic number, because the mean of its divisors is an integer number (24347407).

Almost surely, 2^90433213 is an apocalyptic number.

It is an amenable number.

90433213 is a deficient number, since it is larger than the sum of its proper divisors (6956415).

90433213 is a wasteful number, since it uses less digits than its factorization.

90433213 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6956414.

The product of its (nonzero) digits is 1944, while the sum is 25.

The square root of 90433213 is about 9509.6379005722. The cubic root of 90433213 is about 448.8583621118.

The spelling of 90433213 in words is "ninety million, four hundred thirty-three thousand, two hundred thirteen".