99431773 has 8 divisors (see below), whose sum is σ = 114762240. Its totient is φ = 84382800.

The previous prime is 99431747. The next prime is 99431777. The reversal of 99431773 is 37713499.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 99431773 - 2²¹ = 97334621 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 (99431777) 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 7 ways as a sum of consecutive naturals, for example, 69613 + ... + 71026.

It is an arithmetic number, because the mean of its divisors is an integer number (14345280).

Almost surely, 2^99431773 is an apocalyptic number.

It is an amenable number.

99431773 is a deficient number, since it is larger than the sum of its proper divisors (15330467).

99431773 is a wasteful number, since it uses less digits than its factorization.

99431773 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 140747.

The product of its digits is 142884, while the sum is 43.

The square root of 99431773 is about 9971.5481746818. The cubic root of 99431773 is about 463.2780541794.

The spelling of 99431773 in words is "ninety-nine million, four hundred thirty-one thousand, seven hundred seventy-three".