989089471 has 2 divisors, whose sum is σ = 989089472. Its totient is φ = 989089470.

The previous prime is 989089463. The next prime is 989089477. The reversal of 989089471 is 174980989.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 989089471 - 2³ = 989089463 is a prime.

It is a super-3 number, since 3×989089471³ (a number of 28 digits) contains 333 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (989089477) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494544735 + 494544736.

It is an arithmetic number, because the mean of its divisors is an integer number (494544736).

Almost surely, 2^989089471 is an apocalyptic number.

989089471 is a deficient number, since it is larger than the sum of its proper divisors (1).

989089471 is an equidigital number, since it uses as much as digits as its factorization.

989089471 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1306368, while the sum is 55.

The square root of 989089471 is about 31449.7928610031. The cubic root of 989089471 is about 996.3498496132.

The spelling of 989089471 in words is "nine hundred eighty-nine million, eighty-nine thousand, four hundred seventy-one".