99993426 has 32 divisors (see below), whose sum is σ = 217401408. Its totient is φ = 30477120.

The previous prime is 99993419. The next prime is 99993427. The reversal of 99993426 is 62439999.

It is not an unprimeable number, because it can be changed into a prime (99993427) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2356 + ... + 14336.

It is an arithmetic number, because the mean of its divisors is an integer number (6793794).

Almost surely, 2^99993426 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 99993426, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (108700704).

99993426 is an abundant number, since it is smaller than the sum of its proper divisors (117407982).

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

99993426 is a wasteful number, since it uses less digits than its factorization.

99993426 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12106.

The product of its digits is 944784, while the sum is 51.

The square root of 99993426 is about 9999.6712945976. The cubic root of 99993426 is about 464.1487118701.

The spelling of 99993426 in words is "ninety-nine million, nine hundred ninety-three thousand, four hundred twenty-six".