1980079 has 2 divisors, whose sum is σ = 1980080. Its totient is φ = 1980078.

The previous prime is 1980073. The next prime is 1980089. The reversal of 1980079 is 9700891.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 1980079 - 2¹³ = 1971887 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1980073) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 990039 + 990040.

It is an arithmetic number, because the mean of its divisors is an integer number (990040).

2^1980079 is an apocalyptic number.

1980079 is a deficient number, since it is larger than the sum of its proper divisors (1).

1980079 is an equidigital number, since it uses as much as digits as its factorization.

1980079 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 34.

The square root of 1980079 is about 1407.1527990947. The cubic root of 1980079 is about 125.5723935905.

The spelling of 1980079 in words is "one million, nine hundred eighty thousand, seventy-nine".