99428611 has 2 divisors, whose sum is σ = 99428612. Its totient is φ = 99428610.

The previous prime is 99428579. The next prime is 99428621. The reversal of 99428611 is 11682499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99428611 - 2⁵ = 99428579 is a prime.

It is not a weakly prime, because it can be changed into another prime (99428621) by changing a digit.

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

It is an upside-down number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49714305 + 49714306.

It is an arithmetic number, because the mean of its divisors is an integer number (49714306).

Almost surely, 2^99428611 is an apocalyptic number.

99428611 is a deficient number, since it is larger than the sum of its proper divisors (1).

99428611 is an equidigital number, since it uses as much as digits as its factorization.

99428611 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 31104, while the sum is 40.

The square root of 99428611 is about 9971.3896223144. The cubic root of 99428611 is about 463.2731432719.

The spelling of 99428611 in words is "ninety-nine million, four hundred twenty-eight thousand, six hundred eleven".