1027979985 has 8 divisors (see below), whose sum is σ = 1644768000. Its totient is φ = 548255984.

The previous prime is 1027979977. The next prime is 1027979989. The reversal of 1027979985 is 5899797201.

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 1027979985 - 2³ = 1027979977 is a prime.

It is not an unprimeable number, because it can be changed into a prime (1027979989) 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 7 ways as a sum of consecutive naturals, for example, 34265985 + ... + 34266014.

It is an arithmetic number, because the mean of its divisors is an integer number (205596000).

Almost surely, 2^1027979985 is an apocalyptic number.

1027979985 is a gapful number since it is divisible by the number (15) formed by its first and last digit.

It is an amenable number.

1027979985 is a deficient number, since it is larger than the sum of its proper divisors (616788015).

1027979985 is an equidigital number, since it uses as much as digits as its factorization.

1027979985 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 68532007.

The product of its (nonzero) digits is 2857680, while the sum is 57.

The square root of 1027979985 is about 32062.1269568942. The cubic root of 1027979985 is about 1009.2410024910.

The spelling of 1027979985 in words is "one billion, twenty-seven million, nine hundred seventy-nine thousand, nine hundred eighty-five".