99986210 has 32 divisors (see below), whose sum is σ = 185985072. Its totient is φ = 38672640.

The previous prime is 99986153. The next prime is 99986233. The reversal of 99986210 is 1268999.

It can be written as a sum of positive squares in 8 ways, for example, as 52693081 + 47293129 = 7259^2 + 6877^2 .

It is a Smith number, since the sum of its digits (44) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a nialpdrome in base 10.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 66224 + ... + 67716.

Almost surely, 2^99986210 is an apocalyptic number.

99986210 is a deficient number, since it is larger than the sum of its proper divisors (85998862).

99986210 is a wasteful number, since it uses less digits than its factorization.

99986210 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1718.

The product of its (nonzero) digits is 69984, while the sum is 44.

The square root of 99986210 is about 9999.3104762278. The cubic root of 99986210 is about 464.1375465438.

The spelling of 99986210 in words is "ninety-nine million, nine hundred eighty-six thousand, two hundred ten".