99426139 has 2 divisors, whose sum is σ = 99426140. Its totient is φ = 99426138.

The previous prime is 99426137. The next prime is 99426163. The reversal of 99426139 is 93162499.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99426139 - 2¹ = 99426137 is a prime.

Together with 99426137, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 99426095 and 99426104.

It is not a weakly prime, because it can be changed into another prime (99426137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49713069 + 49713070.

It is an arithmetic number, because the mean of its divisors is an integer number (49713070).

Almost surely, 2^99426139 is an apocalyptic number.

99426139 is a deficient number, since it is larger than the sum of its proper divisors (1).

99426139 is an equidigital number, since it uses as much as digits as its factorization.

99426139 is an evil number, because the sum of its binary digits is even.

The product of its digits is 104976, while the sum is 43.

The square root of 99426139 is about 9971.2656669051. The cubic root of 99426139 is about 463.2693039320.

The spelling of 99426139 in words is "ninety-nine million, four hundred twenty-six thousand, one hundred thirty-nine".