889470977 has 8 divisors (see below), whose sum is σ = 920673000. Its totient is φ = 858304384.

The previous prime is 889470947. The next prime is 889470979. The reversal of 889470977 is 779074988.

It is a Cunningham number, because it is equal to 29824²+1.

It can be written as a sum of positive squares in 4 ways, for example, as 466387216 + 423083761 = 21596^2 + 20569^2 .

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 889470977 - 2⁶ = 889470913 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (889470979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 48653 + ... + 64389.

It is an arithmetic number, because the mean of its divisors is an integer number (115084125).

Almost surely, 2^889470977 is an apocalyptic number.

It is an amenable number.

889470977 is a deficient number, since it is larger than the sum of its proper divisors (31202023).

889470977 is a wasteful number, since it uses less digits than its factorization.

889470977 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 17715.

The product of its (nonzero) digits is 7112448, while the sum is 59.

The square root of 889470977 is about 29824.0000167650. Note that the first 4 decimals coincide. The cubic root of 889470977 is about 961.7095468239.

The spelling of 889470977 in words is "eight hundred eighty-nine million, four hundred seventy thousand, nine hundred seventy-seven".