99070987 has 2 divisors, whose sum is σ = 99070988. Its totient is φ = 99070986.

The previous prime is 99070981. The next prime is 99071023. The reversal of 99070987 is 78907099.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-99070987 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 99070987.

It is not a weakly prime, because it can be changed into another prime (99070981) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 49535493 + 49535494.

It is an arithmetic number, because the mean of its divisors is an integer number (49535494).

Almost surely, 2^99070987 is an apocalyptic number.

99070987 is a deficient number, since it is larger than the sum of its proper divisors (1).

99070987 is an equidigital number, since it uses as much as digits as its factorization.

99070987 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 285768, while the sum is 49.

The square root of 99070987 is about 9953.4409628028. The cubic root of 99070987 is about 462.7170436854.

The spelling of 99070987 in words is "ninety-nine million, seventy thousand, nine hundred eighty-seven".