99443666 has 16 divisors (see below), whose sum is σ = 172811904. Its totient is φ = 42034464.

The previous prime is 99443627. The next prime is 99443671. The reversal of 99443666 is 66634499.

It is a Curzon number.

It is a self number, because there is not a number n which added to its sum of digits gives 99443666.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 47630 + ... + 49673.

It is an arithmetic number, because the mean of its divisors is an integer number (10800744).

Almost surely, 2^99443666 is an apocalyptic number.

99443666 is a deficient number, since it is larger than the sum of its proper divisors (73368238).

99443666 is a wasteful number, since it uses less digits than its factorization.

99443666 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 97385.

The product of its digits is 839808, while the sum is 47.

The square root of 99443666 is about 9972.1445035659. The cubic root of 99443666 is about 463.2965242857.

It can be divided in two parts, 99 and 443666, that multiplied together give a palindrome (43922934).

The spelling of 99443666 in words is "ninety-nine million, four hundred forty-three thousand, six hundred sixty-six".