90854923 has 4 divisors (see below), whose sum is σ = 90899128. Its totient is φ = 90810720.

The previous prime is 90854917. The next prime is 90854989. The reversal of 90854923 is 32945809.

It is a happy number.

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 90854923 - 2⁹ = 90854411 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90834923) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 18861 + ... + 23182.

It is an arithmetic number, because the mean of its divisors is an integer number (22724782).

Almost surely, 2^90854923 is an apocalyptic number.

90854923 is a deficient number, since it is larger than the sum of its proper divisors (44205).

90854923 is a wasteful number, since it uses less digits than its factorization.

90854923 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 44204.

The product of its (nonzero) digits is 77760, while the sum is 40.

The square root of 90854923 is about 9531.7848800736. The cubic root of 90854923 is about 449.5549888741.

The spelling of 90854923 in words is "ninety million, eight hundred fifty-four thousand, nine hundred twenty-three".