90855733 has 4 divisors (see below), whose sum is σ = 91704960. Its totient is φ = 90006508.

The previous prime is 90855719. The next prime is 90855749. The reversal of 90855733 is 33755809.

It is a happy number.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is not a de Polignac number, because 90855733 - 2¹⁷ = 90724661 is a prime.

It is a Smith number, since the sum of its digits (40) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90855703) 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, 424453 + ... + 424666.

It is an arithmetic number, because the mean of its divisors is an integer number (22926240).

Almost surely, 2^90855733 is an apocalyptic number.

It is an amenable number.

90855733 is a deficient number, since it is larger than the sum of its proper divisors (849227).

90855733 is a wasteful number, since it uses less digits than its factorization.

90855733 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 849226.

The product of its (nonzero) digits is 113400, while the sum is 40.

The square root of 90855733 is about 9531.8273693977. The cubic root of 90855733 is about 449.5563248445.

The spelling of 90855733 in words is "ninety million, eight hundred fifty-five thousand, seven hundred thirty-three".