989870041 has 2 divisors, whose sum is σ = 989870042. Its totient is φ = 989870040.

The previous prime is 989870039. The next prime is 989870053. The reversal of 989870041 is 140078989.

It is a happy number.

989870041 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 can be written as a sum of positive squares in only one way, i.e., 987216400 + 2653641 = 31420^2 + 1629^2 .

It is an emirp because it is prime and its reverse (140078989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989870041 - 2¹ = 989870039 is a prime.

Together with 989870039, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 989869973 and 989870000.

It is not a weakly prime, because it can be changed into another prime (989877041) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494935020 + 494935021.

It is an arithmetic number, because the mean of its divisors is an integer number (494935021).

Almost surely, 2^989870041 is an apocalyptic number.

It is an amenable number.

989870041 is a deficient number, since it is larger than the sum of its proper divisors (1).

989870041 is an equidigital number, since it uses as much as digits as its factorization.

989870041 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 145152, while the sum is 46.

The square root of 989870041 is about 31462.2001932478. The cubic root of 989870041 is about 996.6118806115.

The spelling of 989870041 in words is "nine hundred eighty-nine million, eight hundred seventy thousand, forty-one".