99540223 has 4 divisors (see below), whose sum is σ = 100061568. Its totient is φ = 99018880.

The previous prime is 99540193. The next prime is 99540229. The reversal of 99540223 is 32204599.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 32204599 = 7 ⋅4600657.

It is a cyclic number.

It is not a de Polignac number, because 99540223 - 2⁵ = 99540191 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99540229) 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, 260386 + ... + 260767.

It is an arithmetic number, because the mean of its divisors is an integer number (25015392).

Almost surely, 2^99540223 is an apocalyptic number.

99540223 is a deficient number, since it is larger than the sum of its proper divisors (521345).

99540223 is a wasteful number, since it uses less digits than its factorization.

99540223 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 521344.

The product of its (nonzero) digits is 19440, while the sum is 34.

The square root of 99540223 is about 9976.9846647171. The cubic root of 99540223 is about 463.4464250736.

It can be divided in two parts, 9954022 and 3, that added together give a square (9954025 = 3155²).

The spelling of 99540223 in words is "ninety-nine million, five hundred forty thousand, two hundred twenty-three".