90478223 has 4 divisors (see below), whose sum is σ = 98703528. Its totient is φ = 82252920.

The previous prime is 90478183. The next prime is 90478249. The reversal of 90478223 is 32287409.

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 90478223 - 2⁸ = 90477967 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90478253) 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, 4112636 + ... + 4112657.

It is an arithmetic number, because the mean of its divisors is an integer number (24675882).

Almost surely, 2^90478223 is an apocalyptic number.

90478223 is a deficient number, since it is larger than the sum of its proper divisors (8225305).

90478223 is a wasteful number, since it uses less digits than its factorization.

90478223 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 8225304.

The product of its (nonzero) digits is 24192, while the sum is 35.

The square root of 90478223 is about 9512.0041526484. The cubic root of 90478223 is about 448.9328176624.

The spelling of 90478223 in words is "ninety million, four hundred seventy-eight thousand, two hundred twenty-three".