1979713 has 2 divisors, whose sum is σ = 1979714. Its totient is φ = 1979712.

The previous prime is 1979689. The next prime is 1979717. The reversal of 1979713 is 3179791.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 1979649 + 64 = 1407^2 + 8^2 .

It is a cyclic number.

It is not a de Polignac number, because 1979713 - 2¹³ = 1971521 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (1979717) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 989856 + 989857.

It is an arithmetic number, because the mean of its divisors is an integer number (989857).

2^1979713 is an apocalyptic number.

It is an amenable number.

1979713 is a deficient number, since it is larger than the sum of its proper divisors (1).

1979713 is an equidigital number, since it uses as much as digits as its factorization.

1979713 is an evil number, because the sum of its binary digits is even.

The product of its digits is 11907, while the sum is 37.

The square root of 1979713 is about 1407.0227432419. The cubic root of 1979713 is about 125.5646561336.

The spelling of 1979713 in words is "one million, nine hundred seventy-nine thousand, seven hundred thirteen".