90234855 has 24 divisors (see below), whose sum is σ = 160047888. Its totient is φ = 47005056.

The previous prime is 90234853. The next prime is 90234869. The reversal of 90234855 is 55843209.

It is not a de Polignac number, because 90234855 - 2¹ = 90234853 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90234853) 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 23 ways as a sum of consecutive naturals, for example, 21382 + ... + 25251.

It is an arithmetic number, because the mean of its divisors is an integer number (6668662).

Almost surely, 2^90234855 is an apocalyptic number.

90234855 is a deficient number, since it is larger than the sum of its proper divisors (69813033).

90234855 is a wasteful number, since it uses less digits than its factorization.

90234855 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 46687 (or 46684 counting only the distinct ones).

The product of its (nonzero) digits is 43200, while the sum is 36.

The square root of 90234855 is about 9499.2028612932. The cubic root of 90234855 is about 448.5299436017.

The spelling of 90234855 in words is "ninety million, two hundred thirty-four thousand, eight hundred fifty-five".