1089980406 has 12 divisors (see below), whose sum is σ = 2361624252. Its totient is φ = 363326796.

The previous prime is 1089980393. The next prime is 1089980413. The reversal of 1089980406 is 6040899801.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 30277216 + ... + 30277251.

It is an arithmetic number, because the mean of its divisors is an integer number (196802021).

Almost surely, 2^1089980406 is an apocalyptic number.

1089980406 is an abundant number, since it is smaller than the sum of its proper divisors (1271643846).

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

1089980406 is a wasteful number, since it uses less digits than its factorization.

1089980406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 60554475 (or 60554472 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 45.

The square root of 1089980406 is about 33014.8512945311. The cubic root of 1089980406 is about 1029.1362998625.

The spelling of 1089980406 in words is "one billion, eighty-nine million, nine hundred eighty thousand, four hundred six".