980958109 has 2 divisors, whose sum is σ = 980958110. Its totient is φ = 980958108.

The previous prime is 980958037. The next prime is 980958133. The reversal of 980958109 is 901859089.

It is a happy number.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 629508100 + 351450009 = 25090^2 + 18747^2 .

It is an emirp because it is prime and its reverse (901859089) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 980958109 - 2⁹ = 980957597 is a prime.

It is a super-2 number, since 2×980958109² = 1924557623225711762, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (980958179) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 490479054 + 490479055.

It is an arithmetic number, because the mean of its divisors is an integer number (490479055).

Almost surely, 2^980958109 is an apocalyptic number.

It is an amenable number.

980958109 is a deficient number, since it is larger than the sum of its proper divisors (1).

980958109 is an equidigital number, since it uses as much as digits as its factorization.

980958109 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 49.

The square root of 980958109 is about 31320.2507812438. The cubic root of 980958109 is about 993.6119831319.

The spelling of 980958109 in words is "nine hundred eighty million, nine hundred fifty-eight thousand, one hundred nine".