99950987 has 2 divisors, whose sum is σ = 99950988. Its totient is φ = 99950986.

The previous prime is 99950971. The next prime is 99951013. The reversal of 99950987 is 78905999.

It is a weak prime.

It is an emirp because it is prime and its reverse (78905999) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 99950987 - 2⁴ = 99950971 is a prime.

It is not a weakly prime, because it can be changed into another prime (99950957) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49975493 + 49975494.

It is an arithmetic number, because the mean of its divisors is an integer number (49975494).

Almost surely, 2^99950987 is an apocalyptic number.

99950987 is a deficient number, since it is larger than the sum of its proper divisors (1).

99950987 is an equidigital number, since it uses as much as digits as its factorization.

99950987 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1837080, while the sum is 56.

The square root of 99950987 is about 9997.5490496421. The cubic root of 99950987 is about 464.0830382374.

The spelling of 99950987 in words is "ninety-nine million, nine hundred fifty thousand, nine hundred eighty-seven".