984089780 has 12 divisors (see below), whose sum is σ = 2066588580. Its totient is φ = 393635904.

The previous prime is 984089779. The next prime is 984089783. The reversal of 984089780 is 87980489.

It can be written as a sum of positive squares in 2 ways, for example, as 406264336 + 577825444 = 20156^2 + 24038^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (984089783) 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, 24602225 + ... + 24602264.

It is an arithmetic number, because the mean of its divisors is an integer number (172215715).

Almost surely, 2^984089780 is an apocalyptic number.

It is an amenable number.

984089780 is an abundant number, since it is smaller than the sum of its proper divisors (1082498800).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

984089780 is a wasteful number, since it uses less digits than its factorization.

984089780 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 49204498 (or 49204496 counting only the distinct ones).

The product of its (nonzero) digits is 1161216, while the sum is 53.

The square root of 984089780 is about 31370.2052910082. The cubic root of 984089780 is about 994.6682159359.

The spelling of 984089780 in words is "nine hundred eighty-four million, eighty-nine thousand, seven hundred eighty".