90000011 has 4 divisors (see below), whose sum is σ = 90020112. Its totient is φ = 89979912.

The previous prime is 89999999. The next prime is 90000049. The reversal of 90000011 is 11000009.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 11000009 = 31 ⋅354839.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-90000011 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 89999947 and 90000001.

It is not an unprimeable number, because it can be changed into a prime (90000611) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 50 + ... + 13416.

It is an arithmetic number, because the mean of its divisors is an integer number (22505028).

Almost surely, 2^90000011 is an apocalyptic number.

90000011 is a deficient number, since it is larger than the sum of its proper divisors (20101).

90000011 is a wasteful number, since it uses less digits than its factorization.

90000011 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 20100.

The product of its (nonzero) digits is 9, while the sum is 11.

The square root of 90000011 is about 9486.8335602560. The cubic root of 90000011 is about 448.1404929133.

The spelling of 90000011 in words is "ninety million, eleven", and thus it is an aban number and an uban number.