985383109 has 2 divisors, whose sum is σ = 985383110. Its totient is φ = 985383108.

The previous prime is 985383101. The next prime is 985383167. The reversal of 985383109 is 901383589.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 981568900 + 3814209 = 31330^2 + 1953^2 .

It is a cyclic number.

It is not a de Polignac number, because 985383109 - 2³ = 985383101 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (985383101) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 492691554 + 492691555.

It is an arithmetic number, because the mean of its divisors is an integer number (492691555).

Almost surely, 2^985383109 is an apocalyptic number.

It is an amenable number.

985383109 is a deficient number, since it is larger than the sum of its proper divisors (1).

985383109 is an equidigital number, since it uses as much as digits as its factorization.

985383109 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 233280, while the sum is 46.

The square root of 985383109 is about 31390.8124934669. The cubic root of 985383109 is about 995.1037690484.

The spelling of 985383109 in words is "nine hundred eighty-five million, three hundred eighty-three thousand, one hundred nine".