99426 has 16 divisors (see below), whose sum is σ = 202464. Its totient is φ = 32544.

The previous prime is 99409. The next prime is 99431. The reversal of 99426 is 62499.

It is a junction number, because it is equal to n+sod(n) for n = 99393 and 99402.

It is a congruent number.

It is an unprimeable number.

99426 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 325 + ... + 551.

It is an arithmetic number, because the mean of its divisors is an integer number (12654).

2⁹⁹⁴²⁶ is an apocalyptic number.

99426 is an abundant number, since it is smaller than the sum of its proper divisors (103038).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

It is a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (101232).

99426 is a wasteful number, since it uses less digits than its factorization.

99426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 305.

The product of its digits is 3888, while the sum is 30.

The square root of 99426 is about 315.3188862089. The cubic root of 99426 is about 46.3269088045.

It can be divided in two parts, 99 and 426, that added together give a palindrome (525).

The spelling of 99426 in words is "ninety-nine thousand, four hundred twenty-six".