90443723 has 8 divisors (see below), whose sum is σ = 96054192. Its totient is φ = 84865536.

The previous prime is 90443711. The next prime is 90443747. The reversal of 90443723 is 32734409.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90443723 - 2¹⁰ = 90442699 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 90443723.

It is not an unprimeable number, because it can be changed into a prime (90443623) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 2165 + ... + 13622.

It is an arithmetic number, because the mean of its divisors is an integer number (12006774).

Almost surely, 2^90443723 is an apocalyptic number.

90443723 is a deficient number, since it is larger than the sum of its proper divisors (5610469).

90443723 is a wasteful number, since it uses less digits than its factorization.

90443723 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 16141.

The product of its (nonzero) digits is 18144, while the sum is 32.

The square root of 90443723 is about 9510.1904817937. The cubic root of 90443723 is about 448.8757499662.

The spelling of 90443723 in words is "ninety million, four hundred forty-three thousand, seven hundred twenty-three".