90233843 has 12 divisors (see below), whose sum is σ = 107201952. Its totient is φ = 75695760.

The previous prime is 90233837. The next prime is 90233863. The reversal of 90233843 is 34833209.

It is a happy number.

It is not a de Polignac number, because 90233843 - 2⁴ = 90233827 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90233813) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 17288 + ... + 21893.

It is an arithmetic number, because the mean of its divisors is an integer number (8933496).

Almost surely, 2^90233843 is an apocalyptic number.

90233843 is a deficient number, since it is larger than the sum of its proper divisors (16968109).

90233843 is a wasteful number, since it uses less digits than its factorization.

90233843 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 39242 (or 39235 counting only the distinct ones).

The product of its (nonzero) digits is 15552, while the sum is 32.

The square root of 90233843 is about 9499.1495935163. The cubic root of 90233843 is about 448.5282668143.

The spelling of 90233843 in words is "ninety million, two hundred thirty-three thousand, eight hundred forty-three".