99430 has 16 divisors (see below), whose sum is σ = 183024. Its totient is φ = 38880.

The previous prime is 99409. The next prime is 99431. The reversal of 99430 is 3499.

It is an Ulam number.

It is a nialpdrome in base 10.

It is a junction number, because it is equal to n+sod(n) for n = 99395 and 99404.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99431) by changing a digit.

99430 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 529 + ... + 691.

It is an arithmetic number, because the mean of its divisors is an integer number (11439).

2⁹⁹⁴³⁰ is an apocalyptic number.

99430 is a deficient number, since it is larger than the sum of its proper divisors (83594).

99430 is a wasteful number, since it uses less digits than its factorization.

99430 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 231.

The product of its (nonzero) digits is 972, while the sum is 25.

The square root of 99430 is about 315.3252289304. The cubic root of 99430 is about 46.3275300543.

It can be divided in two parts, 994 and 30, that added together give a 10-th power (1024 = 2¹⁰).

The spelling of 99430 in words is "ninety-nine thousand, four hundred thirty".