989877041 has 2 divisors, whose sum is σ = 989877042. Its totient is φ = 989877040.

The previous prime is 989877023. The next prime is 989877047. The reversal of 989877041 is 140778989.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 729216016 + 260661025 = 27004^2 + 16145^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-989877041 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (989877047) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494938520 + 494938521.

It is an arithmetic number, because the mean of its divisors is an integer number (494938521).

Almost surely, 2^989877041 is an apocalyptic number.

It is an amenable number.

989877041 is a deficient number, since it is larger than the sum of its proper divisors (1).

989877041 is an equidigital number, since it uses as much as digits as its factorization.

989877041 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1016064, while the sum is 53.

The square root of 989877041 is about 31462.3114376551. The cubic root of 989877041 is about 996.6142298312.

The spelling of 989877041 in words is "nine hundred eighty-nine million, eight hundred seventy-seven thousand, forty-one".