989897003 has 2 divisors, whose sum is σ = 989897004. Its totient is φ = 989897002.

The previous prime is 989896987. The next prime is 989897011. The reversal of 989897003 is 300798989.

It is a strong prime.

It is an emirp because it is prime and its reverse (300798989) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 989897003 - 2⁴ = 989896987 is a prime.

It is not a weakly prime, because it can be changed into another prime (989897303) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494948501 + 494948502.

It is an arithmetic number, because the mean of its divisors is an integer number (494948502).

Almost surely, 2^989897003 is an apocalyptic number.

989897003 is a deficient number, since it is larger than the sum of its proper divisors (1).

989897003 is an equidigital number, since it uses as much as digits as its factorization.

989897003 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 979776, while the sum is 53.

The square root of 989897003 is about 31462.6286727603. The cubic root of 989897003 is about 996.6209290739.

The spelling of 989897003 in words is "nine hundred eighty-nine million, eight hundred ninety-seven thousand, three".