7021404779 has 2 divisors, whose sum is σ = 7021404780. Its totient is φ = 7021404778.

The previous prime is 7021404757. The next prime is 7021404791. The reversal of 7021404779 is 9774041207.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 7021404779 - 2¹⁶ = 7021339243 is a prime.

It is not a weakly prime, because it can be changed into another prime (7021404979) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3510702389 + 3510702390.

It is an arithmetic number, because the mean of its divisors is an integer number (3510702390).

Almost surely, 2^7021404779 is an apocalyptic number.

7021404779 is a deficient number, since it is larger than the sum of its proper divisors (1).

7021404779 is an equidigital number, since it uses as much as digits as its factorization.

7021404779 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 98784, while the sum is 41.

The square root of 7021404779 is about 83793.8230360687. The cubic root of 7021404779 is about 1914.8790020512.

The spelling of 7021404779 in words is "seven billion, twenty-one million, four hundred four thousand, seven hundred seventy-nine".