989356567 has 2 divisors, whose sum is σ = 989356568. Its totient is φ = 989356566.

The previous prime is 989356553. The next prime is 989356591. The reversal of 989356567 is 765653989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 989356567 - 2¹⁵ = 989323799 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989356967) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494678283 + 494678284.

It is an arithmetic number, because the mean of its divisors is an integer number (494678284).

Almost surely, 2^989356567 is an apocalyptic number.

989356567 is a deficient number, since it is larger than the sum of its proper divisors (1).

989356567 is an equidigital number, since it uses as much as digits as its factorization.

989356567 is an evil number, because the sum of its binary digits is even.

The product of its digits is 12247200, while the sum is 58.

The square root of 989356567 is about 31454.0389616342. The cubic root of 989356567 is about 996.4395270779.

The spelling of 989356567 in words is "nine hundred eighty-nine million, three hundred fifty-six thousand, five hundred sixty-seven".