1089980405 has 8 divisors (see below), whose sum is σ = 1309053312. Its totient is φ = 871266448.

The previous prime is 1089980393. The next prime is 1089980413. The reversal of 1089980405 is 5040899801.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 1089980405 - 2⁴ = 1089980389 is a prime.

It is a Duffinian number.

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 7 ways as a sum of consecutive naturals, for example, 83009 + ... + 95238.

It is an arithmetic number, because the mean of its divisors is an integer number (163631664).

Almost surely, 2^1089980405 is an apocalyptic number.

It is an amenable number.

1089980405 is a deficient number, since it is larger than the sum of its proper divisors (219072907).

1089980405 is a wasteful number, since it uses less digits than its factorization.

1089980405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179475.

The product of its (nonzero) digits is 103680, while the sum is 44.

The square root of 1089980405 is about 33014.8512793864. The cubic root of 1089980405 is about 1029.1362995478.

The spelling of 1089980405 in words is "one billion, eighty-nine million, nine hundred eighty thousand, four hundred five".