4978771829 has 2 divisors, whose sum is σ = 4978771830. Its totient is φ = 4978771828.

The previous prime is 4978771789. The next prime is 4978771867. The reversal of 4978771829 is 9281778794.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 3183554929 + 1795216900 = 56423^2 + 42370^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-4978771829 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (4978771129) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2489385914 + 2489385915.

It is an arithmetic number, because the mean of its divisors is an integer number (2489385915).

Almost surely, 2^4978771829 is an apocalyptic number.

It is an amenable number.

4978771829 is a deficient number, since it is larger than the sum of its proper divisors (1).

4978771829 is an equidigital number, since it uses as much as digits as its factorization.

4978771829 is an evil number, because the sum of its binary digits is even.

The product of its digits is 14224896, while the sum is 62.

The square root of 4978771829 is about 70560.4126192584. The cubic root of 4978771829 is about 1707.5525363426.

The spelling of 4978771829 in words is "four billion, nine hundred seventy-eight million, seven hundred seventy-one thousand, eight hundred twenty-nine".