90234843 has 4 divisors (see below), whose sum is σ = 120313128. Its totient is φ = 60156560.

The previous prime is 90234841. The next prime is 90234853. The reversal of 90234843 is 34843209.

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

It is a cyclic number.

It is not a de Polignac number, because 90234843 - 2¹ = 90234841 is a prime.

It is not an unprimeable number, because it can be changed into a prime (90234841) 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, 15039138 + ... + 15039143.

It is an arithmetic number, because the mean of its divisors is an integer number (30078282).

Almost surely, 2^90234843 is an apocalyptic number.

90234843 is a deficient number, since it is larger than the sum of its proper divisors (30078285).

90234843 is a wasteful number, since it uses less digits than its factorization.

90234843 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30078284.

The product of its (nonzero) digits is 20736, while the sum is 33.

The square root of 90234843 is about 9499.2022296612. The cubic root of 90234843 is about 448.5299237189.

The spelling of 90234843 in words is "ninety million, two hundred thirty-four thousand, eight hundred forty-three".