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990011 = 1190001
BaseRepresentation
bin11110001101100111011
31212022001002
43301230323
5223140021
633115215
711262221
oct3615473
91768032
10990011
116168a0
123b8b0b
13288809
141bab11
1514850b
hexf1b3b

990011 has 4 divisors (see below), whose sum is σ = 1080024. Its totient is φ = 900000.

The previous prime is 990001. The next prime is 990013. The reversal of 990011 is 110099.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 110099 = 1110009.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2k-990011 is a prime.

It is a zygodrome in base 10.

It is not an unprimeable number, because it can be changed into a prime (990013) by changing a digit.

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 3 ways as a sum of consecutive naturals, for example, 44990 + ... + 45011.

It is an arithmetic number, because the mean of its divisors is an integer number (270006).

2990011 is an apocalyptic number.

990011 is a deficient number, since it is larger than the sum of its proper divisors (90013).

990011 is a wasteful number, since it uses less digits than its factorization.

990011 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 90012.

The product of its (nonzero) digits is 81, while the sum is 20.

The square root of 990011 is about 994.9929647992. The cubic root of 990011 is about 99.6659184716.

It can be divided in two parts, 9900 and 11, that multiplied together give a square (108900 = 3302).

The spelling of 990011 in words is "nine hundred ninety thousand, eleven".

Divisors: 1 11 90001 990011