99406 has 8 divisors (see below), whose sum is σ = 155664. Its totient is φ = 47520.

The previous prime is 99401. The next prime is 99409. The reversal of 99406 is 60499.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (99401) by changing a digit.

99406 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 3 ways as a sum of consecutive naturals, for example, 1035 + ... + 1126.

It is an arithmetic number, because the mean of its divisors is an integer number (19458).

2⁹⁹⁴⁰⁶ is an apocalyptic number.

99406 is a deficient number, since it is larger than the sum of its proper divisors (56258).

99406 is a wasteful number, since it uses less digits than its factorization.

99406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2186.

The product of its (nonzero) digits is 1944, while the sum is 28.

The square root of 99406 is about 315.2871706873. The cubic root of 99406 is about 46.3238023055.

It can be divided in two parts, 99 and 406, that added together give a palindrome (505).

The spelling of 99406 in words is "ninety-nine thousand, four hundred six".