90000071 has 8 divisors (see below), whose sum is σ = 104543904. Its totient is φ = 75877920.

The previous prime is 90000059. The next prime is 90000073. The reversal of 90000071 is 17000009.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 90000071 - 2¹⁰ = 89999047 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (90000073) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 104960 + ... + 105813.

It is an arithmetic number, because the mean of its divisors is an integer number (13067988).

Almost surely, 2^90000071 is an apocalyptic number.

90000071 is a deficient number, since it is larger than the sum of its proper divisors (14543833).

90000071 is a wasteful number, since it uses less digits than its factorization.

90000071 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 210841.

The product of its (nonzero) digits is 63, while the sum is 17.

The square root of 90000071 is about 9486.8367225330. The cubic root of 90000071 is about 448.1405925000.

The spelling of 90000071 in words is "ninety million, seventy-one", and thus it is an aban number and an uban number.