1089418979 has 16 divisors (see below), whose sum is σ = 1252567680. Its totient is φ = 937085760.

The previous prime is 1089418963. The next prime is 1089418987. The reversal of 1089418979 is 9798149801.

It is a cyclic number.

It is not a de Polignac number, because 1089418979 - 2⁴ = 1089418963 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1089418999) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 193052 + ... + 198614.

It is an arithmetic number, because the mean of its divisors is an integer number (78285480).

Almost surely, 2^1089418979 is an apocalyptic number.

1089418979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1089418979 is a deficient number, since it is larger than the sum of its proper divisors (163148701).

1089418979 is a wasteful number, since it uses less digits than its factorization.

1089418979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 6530.

The product of its (nonzero) digits is 1306368, while the sum is 56.

The square root of 1089418979 is about 33006.3475561899. The cubic root of 1089418979 is about 1028.9595737084.

The spelling of 1089418979 in words is "one billion, eighty-nine million, four hundred eighteen thousand, nine hundred seventy-nine".