989100193 has 2 divisors, whose sum is σ = 989100194. Its totient is φ = 989100192.

The previous prime is 989100179. The next prime is 989100209. The reversal of 989100193 is 391001989.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 832149409 + 156950784 = 28847^2 + 12528^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-989100193 is a prime.

It is not a weakly prime, because it can be changed into another prime (989100493) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 494550096 + 494550097.

It is an arithmetic number, because the mean of its divisors is an integer number (494550097).

Almost surely, 2^989100193 is an apocalyptic number.

It is an amenable number.

989100193 is a deficient number, since it is larger than the sum of its proper divisors (1).

989100193 is an equidigital number, since it uses as much as digits as its factorization.

989100193 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 17496, while the sum is 40.

The square root of 989100193 is about 31449.9633227131. The cubic root of 989100193 is about 996.3534498350.

The spelling of 989100193 in words is "nine hundred eighty-nine million, one hundred thousand, one hundred ninety-three".