1999480979 has 8 divisors (see below), whose sum is σ = 2105322240. Its totient is φ = 1893700296.

The previous prime is 1999480949. The next prime is 1999481069. The reversal of 1999480979 is 9790849991.

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 1999480979 - 2¹² = 1999476883 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (1999480949) 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, 63002 + ... + 89264.

It is an arithmetic number, because the mean of its divisors is an integer number (263165280).

Almost surely, 2^1999480979 is an apocalyptic number.

1999480979 is a gapful number since it is divisible by the number (19) formed by its first and last digit.

1999480979 is a deficient number, since it is larger than the sum of its proper divisors (105841261).

1999480979 is a wasteful number, since it uses less digits than its factorization.

1999480979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 30289.

The product of its (nonzero) digits is 13226976, while the sum is 65.

The square root of 1999480979 is about 44715.5563422843. The cubic root of 1999480979 is about 1259.8120528852.

The spelling of 1999480979 in words is "one billion, nine hundred ninety-nine million, four hundred eighty thousand, nine hundred seventy-nine".