947098881 has 6 divisors (see below), whose sum is σ = 1368031730. Its totient is φ = 631399248.

The previous prime is 947098877. The next prime is 947098897. The reversal of 947098881 is 188890749.

947098881 is a `hidden beast` number, since 9 + 470 + 98 + 8 + 81 = 666.

It can be written as a sum of positive squares in only one way, i.e., 935809281 + 11289600 = 30591^2 + 3360^2 .

It is not a de Polignac number, because 947098881 - 2² = 947098877 is a prime.

It is a super-2 number, since 2×947098881² = 1793992580782904322, which contains 22 as substring.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (947098381) 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 5 ways as a sum of consecutive naturals, for example, 52616596 + ... + 52616613.

Almost surely, 2^947098881 is an apocalyptic number.

It is an amenable number.

947098881 is a deficient number, since it is larger than the sum of its proper divisors (420932849).

947098881 is a wasteful number, since it uses less digits than its factorization.

947098881 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 105233215 (or 105233212 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 54.

The square root of 947098881 is about 30774.9716652997. The cubic root of 947098881 is about 982.0458721345.

The spelling of 947098881 in words is "nine hundred forty-seven million, ninety-eight thousand, eight hundred eighty-one".