99975047 has 2 divisors, whose sum is σ = 99975048. Its totient is φ = 99975046.

The previous prime is 99975041. The next prime is 99975061. The reversal of 99975047 is 74057999.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 99975047 - 2⁶ = 99974983 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 99974986 and 99975004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (99975041) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49987523 + 49987524.

It is an arithmetic number, because the mean of its divisors is an integer number (49987524).

Almost surely, 2^99975047 is an apocalyptic number.

99975047 is a deficient number, since it is larger than the sum of its proper divisors (1).

99975047 is an equidigital number, since it uses as much as digits as its factorization.

99975047 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 714420, while the sum is 50.

The square root of 99975047 is about 9998.7522721588. The cubic root of 99975047 is about 464.1202729609.

The spelling of 99975047 in words is "ninety-nine million, nine hundred seventy-five thousand, forty-seven".