99438273 has 24 divisors (see below), whose sum is σ = 162498336. Its totient is φ = 60264000.

The previous prime is 99438257. The next prime is 99438307. The reversal of 99438273 is 37283499.

It is a happy number.

It is not a de Polignac number, because 99438273 - 2⁴ = 99438257 is a prime.

It is not an unprimeable number, because it can be changed into a prime (99438373) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 15928 + ... + 21273.

It is an arithmetic number, because the mean of its divisors is an integer number (6770764).

Almost surely, 2^99438273 is an apocalyptic number.

It is an amenable number.

99438273 is a deficient number, since it is larger than the sum of its proper divisors (63060063).

99438273 is a wasteful number, since it uses less digits than its factorization.

99438273 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 37227 (or 37215 counting only the distinct ones).

The product of its digits is 326592, while the sum is 45.

The square root of 99438273 is about 9971.8740966781. The cubic root of 99438273 is about 463.2881490135.

The spelling of 99438273 in words is "ninety-nine million, four hundred thirty-eight thousand, two hundred seventy-three".