947099911 has 6 divisors (see below), whose sum is σ = 990069080. Its totient is φ = 905921148.

The previous prime is 947099887. The next prime is 947099921. The reversal of 947099911 is 119990749.

It is a happy number.

947099911 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 947099911 - 2¹⁷ = 946968839 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 (947099921) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 894651 + ... + 895708.

Almost surely, 2^947099911 is an apocalyptic number.

947099911 is a deficient number, since it is larger than the sum of its proper divisors (42969169).

947099911 is a wasteful number, since it uses less digits than its factorization.

947099911 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1790405 (or 1790382 counting only the distinct ones).

The product of its (nonzero) digits is 183708, while the sum is 49.

The square root of 947099911 is about 30774.9883996729. The cubic root of 947099911 is about 982.0462281364.

The spelling of 947099911 in words is "nine hundred forty-seven million, ninety-nine thousand, nine hundred eleven".