99489847 has 2 divisors, whose sum is σ = 99489848. Its totient is φ = 99489846.

The previous prime is 99489829. The next prime is 99489853. The reversal of 99489847 is 74898499.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99489847 - 2²³ = 91101239 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 99489791 and 99489800.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99489347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49744923 + 49744924.

It is an arithmetic number, because the mean of its divisors is an integer number (49744924).

Almost surely, 2^99489847 is an apocalyptic number.

99489847 is a deficient number, since it is larger than the sum of its proper divisors (1).

99489847 is an equidigital number, since it uses as much as digits as its factorization.

99489847 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5225472, while the sum is 58.

The square root of 99489847 is about 9974.4597347425. The cubic root of 99489847 is about 463.3682304973.

The spelling of 99489847 in words is "ninety-nine million, four hundred eighty-nine thousand, eight hundred forty-seven".