99973573 has 24 divisors (see below), whose sum is σ = 124177920. Its totient is φ = 80015040.

The previous prime is 99973541. The next prime is 99973579. The reversal of 99973573 is 37537999.

It is not a de Polignac number, because 99973573 - 2⁵ = 99973541 is a prime.

It is a super-3 number, since 3×99973573³ (a number of 25 digits) contains 333 as substring.

It is a self number, because there is not a number n which added to its sum of digits gives 99973573.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99973579) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 67228 + ... + 68698.

It is an arithmetic number, because the mean of its divisors is an integer number (5174080).

Almost surely, 2^99973573 is an apocalyptic number.

It is an amenable number.

99973573 is a deficient number, since it is larger than the sum of its proper divisors (24204347).

99973573 is a wasteful number, since it uses less digits than its factorization.

99973573 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1577 (or 1570 counting only the distinct ones).

The product of its digits is 1607445, while the sum is 52.

The square root of 99973573 is about 9998.6785626902. The cubic root of 99973573 is about 464.1179920029.

The spelling of 99973573 in words is "ninety-nine million, nine hundred seventy-three thousand, five hundred seventy-three".