988789667 has 2 divisors, whose sum is σ = 988789668. Its totient is φ = 988789666.

The previous prime is 988789657. The next prime is 988789699. The reversal of 988789667 is 766987889.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 988789667 - 2¹⁰ = 988788643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 988789597 and 988789606.

It is not a weakly prime, because it can be changed into another prime (988789657) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494394833 + 494394834.

It is an arithmetic number, because the mean of its divisors is an integer number (494394834).

Almost surely, 2^988789667 is an apocalyptic number.

988789667 is a deficient number, since it is larger than the sum of its proper divisors (1).

988789667 is an equidigital number, since it uses as much as digits as its factorization.

988789667 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 73156608, while the sum is 68.

The square root of 988789667 is about 31445.0261090685. The cubic root of 988789667 is about 996.2491712065.

The spelling of 988789667 in words is "nine hundred eighty-eight million, seven hundred eighty-nine thousand, six hundred sixty-seven".