90000006 has 32 divisors (see below), whose sum is σ = 196743168. Its totient is φ = 27323520.

The previous prime is 89999999. The next prime is 90000049. The reversal of 90000006 is 60000009.

90000006 is a strobogrammatic number because it is the same when read upside-down.

It is a self number, because there is not a number n which added to its sum of digits gives 90000006.

It is a congruent number.

It is an unprimeable number.

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 in 15 ways as a sum of consecutive naturals, for example, 11070 + ... + 17393.

It is an arithmetic number, because the mean of its divisors is an integer number (6148224).

Almost surely, 2^90000006 is an apocalyptic number.

90000006 is an abundant number, since it is smaller than the sum of its proper divisors (106743162).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

90000006 is a wasteful number, since it uses less digits than its factorization.

90000006 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28516.

The product of its (nonzero) digits is 54, while the sum is 15.

The square root of 90000006 is about 9486.8332967329. The cubic root of 90000006 is about 448.1404846144.

The spelling of 90000006 in words is "ninety million, six", and thus it is an aban number and an uban number.