1996944779 has 2 divisors, whose sum is σ = 1996944780. Its totient is φ = 1996944778.

The previous prime is 1996944769. The next prime is 1996944787. The reversal of 1996944779 is 9774496991.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-1996944779 is a prime.

It is not a weakly prime, because it can be changed into another prime (1996944749) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 998472389 + 998472390.

It is an arithmetic number, because the mean of its divisors is an integer number (998472390).

Almost surely, 2^1996944779 is an apocalyptic number.

1996944779 is a deficient number, since it is larger than the sum of its proper divisors (1).

1996944779 is an equidigital number, since it uses as much as digits as its factorization.

1996944779 is an evil number, because the sum of its binary digits is even.

The product of its digits is 30862944, while the sum is 65.

The square root of 1996944779 is about 44687.1880856247. The cubic root of 1996944779 is about 1259.2791667263.

The spelling of 1996944779 in words is "one billion, nine hundred ninety-six million, nine hundred forty-four thousand, seven hundred seventy-nine".