982788121 has 4 divisors (see below), whose sum is σ = 1123186432. Its totient is φ = 842389812.

The previous prime is 982788109. The next prime is 982788187. The reversal of 982788121 is 121887289.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4, and also an emirpimes, since its reverse is a distinct semiprime: 121887289 = 307 ⋅397027.

It is a cyclic number.

It is not a de Polignac number, because 982788121 - 2¹¹ = 982786073 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (982788421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 70199145 + ... + 70199158.

It is an arithmetic number, because the mean of its divisors is an integer number (280796608).

Almost surely, 2^982788121 is an apocalyptic number.

It is an amenable number.

982788121 is a deficient number, since it is larger than the sum of its proper divisors (140398311).

982788121 is a wasteful number, since it uses less digits than its factorization.

982788121 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 140398310.

The product of its digits is 129024, while the sum is 46.

The square root of 982788121 is about 31349.4516857951. The cubic root of 982788121 is about 994.2294720582.

The spelling of 982788121 in words is "nine hundred eighty-two million, seven hundred eighty-eight thousand, one hundred twenty-one".