99540787 has 2 divisors, whose sum is σ = 99540788. Its totient is φ = 99540786.

The previous prime is 99540773. The next prime is 99540799. The reversal of 99540787 is 78704599.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99540787 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99540787.

It is not a weakly prime, because it can be changed into another prime (99540887) 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, 49770393 + 49770394.

It is an arithmetic number, because the mean of its divisors is an integer number (49770394).

Almost surely, 2^99540787 is an apocalyptic number.

99540787 is a deficient number, since it is larger than the sum of its proper divisors (1).

99540787 is an equidigital number, since it uses as much as digits as its factorization.

99540787 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 635040, while the sum is 49.

The square root of 99540787 is about 9977.0129297300. The cubic root of 99540787 is about 463.4473003756.

The spelling of 99540787 in words is "ninety-nine million, five hundred forty thousand, seven hundred eighty-seven".