99189373 has 16 divisors (see below), whose sum is σ = 108727920. Its totient is φ = 90112000.

The previous prime is 99189371. The next prime is 99189379. The reversal of 99189373 is 37398199.

It can be written as a sum of positive squares in 8 ways, for example, as 3090564 + 96098809 = 1758^2 + 9803^2 .

It is a cyclic number.

It is not a de Polignac number, because 99189373 - 2¹ = 99189371 is a prime.

It is a super-3 number, since 3×99189373³ (a number of 25 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99189371) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 69693 + ... + 71101.

It is an arithmetic number, because the mean of its divisors is an integer number (6795495).

Almost surely, 2^99189373 is an apocalyptic number.

It is an amenable number.

99189373 is a deficient number, since it is larger than the sum of its proper divisors (9538547).

99189373 is a wasteful number, since it uses less digits than its factorization.

99189373 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1568.

The product of its digits is 367416, while the sum is 49.

The square root of 99189373 is about 9959.3861758645. The cubic root of 99189373 is about 462.9012799803.

It can be divided in two parts, 9918 and 9373, that added together give a palindrome (19291).

The spelling of 99189373 in words is "ninety-nine million, one hundred eighty-nine thousand, three hundred seventy-three".