90473923 has 4 divisors (see below), whose sum is σ = 90493848. Its totient is φ = 90454000.

The previous prime is 90473897. The next prime is 90473947. The reversal of 90473923 is 32937409.

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 90473923 - 2⁵ = 90473891 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (90473993) 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, 540 + ... + 13462.

It is an arithmetic number, because the mean of its divisors is an integer number (22623462).

Almost surely, 2^90473923 is an apocalyptic number.

90473923 is a deficient number, since it is larger than the sum of its proper divisors (19925).

90473923 is a wasteful number, since it uses less digits than its factorization.

90473923 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 19924.

The product of its (nonzero) digits is 40824, while the sum is 37.

The square root of 90473923 is about 9511.7781197839. The cubic root of 90473923 is about 448.9257056685.

The spelling of 90473923 in words is "ninety million, four hundred seventy-three thousand, nine hundred twenty-three".