989719043 has 2 divisors, whose sum is σ = 989719044. Its totient is φ = 989719042.

The previous prime is 989719021. The next prime is 989719111. The reversal of 989719043 is 340917989.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 989719043 - 2²² = 985524739 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 989718982 and 989719000.

It is not a weakly prime, because it can be changed into another prime (989719013) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494859521 + 494859522.

It is an arithmetic number, because the mean of its divisors is an integer number (494859522).

Almost surely, 2^989719043 is an apocalyptic number.

989719043 is a deficient number, since it is larger than the sum of its proper divisors (1).

989719043 is an equidigital number, since it uses as much as digits as its factorization.

989719043 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 489888, while the sum is 50.

The square root of 989719043 is about 31459.8004284833. The cubic root of 989719043 is about 996.5612025605.

The spelling of 989719043 in words is "nine hundred eighty-nine million, seven hundred nineteen thousand, forty-three".