99947587 has 2 divisors, whose sum is σ = 99947588. Its totient is φ = 99947586.

The previous prime is 99947579. The next prime is 99947591. The reversal of 99947587 is 78574999.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 99947587 - 2³ = 99947579 is a prime.

It is not a weakly prime, because it can be changed into another prime (99947537) by changing a digit.

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

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49973793 + 49973794.

It is an arithmetic number, because the mean of its divisors is an integer number (49973794).

Almost surely, 2^99947587 is an apocalyptic number.

99947587 is a deficient number, since it is larger than the sum of its proper divisors (1).

99947587 is an equidigital number, since it uses as much as digits as its factorization.

99947587 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 5715360, while the sum is 58.

The square root of 99947587 is about 9997.3790065197. The cubic root of 99947587 is about 464.0777759908.

The spelling of 99947587 in words is "ninety-nine million, nine hundred forty-seven thousand, five hundred eighty-seven".