90385223 has 4 divisors (see below), whose sum is σ = 95142360. Its totient is φ = 85628088.

The previous prime is 90385189. The next prime is 90385231. The reversal of 90385223 is 32258309.

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 90385223 - 2¹⁰ = 90384199 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 90385223.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90385283) 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, 2378540 + ... + 2378577.

It is an arithmetic number, because the mean of its divisors is an integer number (23785590).

Almost surely, 2^90385223 is an apocalyptic number.

90385223 is a deficient number, since it is larger than the sum of its proper divisors (4757137).

90385223 is a wasteful number, since it uses less digits than its factorization.

90385223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4757136.

The product of its (nonzero) digits is 12960, while the sum is 32.

The square root of 90385223 is about 9507.1143361169. The cubic root of 90385223 is about 448.7789498268.

The spelling of 90385223 in words is "ninety million, three hundred eighty-five thousand, two hundred twenty-three".