989504017 has 2 divisors, whose sum is σ = 989504018. Its totient is φ = 989504016.

The previous prime is 989503967. The next prime is 989504053. The reversal of 989504017 is 710405989.

989504017 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 960008256 + 29495761 = 30984^2 + 5431^2 .

It is a cyclic number.

It is not a de Polignac number, because 989504017 - 2²³ = 981115409 is a prime.

It is a weakly prime.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494752008 + 494752009.

It is an arithmetic number, because the mean of its divisors is an integer number (494752009).

Almost surely, 2^989504017 is an apocalyptic number.

It is an amenable number.

989504017 is a deficient number, since it is larger than the sum of its proper divisors (1).

989504017 is an equidigital number, since it uses as much as digits as its factorization.

989504017 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 90720, while the sum is 43.

The square root of 989504017 is about 31456.3827704331. The cubic root of 989504017 is about 996.4890264915.

The spelling of 989504017 in words is "nine hundred eighty-nine million, five hundred four thousand, seventeen".