1999002079 has 2 divisors, whose sum is σ = 1999002080. Its totient is φ = 1999002078.

The previous prime is 1999002067. The next prime is 1999002091. The reversal of 1999002079 is 9702009991.

It is a balanced prime because it is at equal distance from previous prime (1999002067) and next prime (1999002091).

It is an emirp because it is prime and its reverse (9702009991) is a distict prime.

It is a cyclic number.

It is not a de Polignac number, because 1999002079 - 2²¹ = 1996904927 is a prime.

1999002079 is a modest number, since divided by 2079 gives 1999 as remainder.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1999005079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 999501039 + 999501040.

It is an arithmetic number, because the mean of its divisors is an integer number (999501040).

Almost surely, 2^1999002079 is an apocalyptic number.

1999002079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1999002079 is an equidigital number, since it uses as much as digits as its factorization.

1999002079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 91854, while the sum is 46.

The square root of 1999002079 is about 44710.2010619501. The cubic root of 1999002079 is about 1259.7114647538.

The spelling of 1999002079 in words is "one billion, nine hundred ninety-nine million, two thousand, seventy-nine".