99905147 has 2 divisors, whose sum is σ = 99905148. Its totient is φ = 99905146.

The previous prime is 99905137. The next prime is 99905153. The reversal of 99905147 is 74150999.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99905147 - 2⁴ = 99905131 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99905098 and 99905107.

It is not a weakly prime, because it can be changed into another prime (99905137) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49952573 + 49952574.

It is an arithmetic number, because the mean of its divisors is an integer number (49952574).

Almost surely, 2^99905147 is an apocalyptic number.

99905147 is a deficient number, since it is larger than the sum of its proper divisors (1).

99905147 is an equidigital number, since it uses as much as digits as its factorization.

99905147 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 102060, while the sum is 44.

The square root of 99905147 is about 9995.2562248299. The cubic root of 99905147 is about 464.0120807274.

The spelling of 99905147 in words is "ninety-nine million, nine hundred five thousand, one hundred forty-seven".