989879071 has 2 divisors, whose sum is σ = 989879072. Its totient is φ = 989879070.

The previous prime is 989879063. The next prime is 989879161. The reversal of 989879071 is 170978989.

989879071 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 989879071 - 2³ = 989879063 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 989878997 and 989879015.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989879041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494939535 + 494939536.

It is an arithmetic number, because the mean of its divisors is an integer number (494939536).

Almost surely, 2^989879071 is an apocalyptic number.

989879071 is a deficient number, since it is larger than the sum of its proper divisors (1).

989879071 is an equidigital number, since it uses as much as digits as its factorization.

989879071 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2286144, while the sum is 58.

The square root of 989879071 is about 31462.3436984596. The cubic root of 989879071 is about 996.6149111029.

The spelling of 989879071 in words is "nine hundred eighty-nine million, eight hundred seventy-nine thousand, seventy-one".