99723426 has 16 divisors (see below), whose sum is σ = 217578528. Its totient is φ = 30219200.

The previous prime is 99723413. The next prime is 99723427. The reversal of 99723426 is 62432799.

It is a happy number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (99723427) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 755415 + ... + 755546.

It is an arithmetic number, because the mean of its divisors is an integer number (13598658).

Almost surely, 2^99723426 is an apocalyptic number.

99723426 is an abundant number, since it is smaller than the sum of its proper divisors (117855102).

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

99723426 is a wasteful number, since it uses less digits than its factorization.

99723426 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1510977.

The product of its digits is 163296, while the sum is 42.

The square root of 99723426 is about 9986.1617251074. The cubic root of 99723426 is about 463.7305739908.

The spelling of 99723426 in words is "ninety-nine million, seven hundred twenty-three thousand, four hundred twenty-six".