788222861 has 2 divisors, whose sum is σ = 788222862. Its totient is φ = 788222860.

The previous prime is 788222821. The next prime is 788222891. The reversal of 788222861 is 168222887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 621554761 + 166668100 = 24931^2 + 12910^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-788222861 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (788222801) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394111430 + 394111431.

It is an arithmetic number, because the mean of its divisors is an integer number (394111431).

Almost surely, 2^788222861 is an apocalyptic number.

It is an amenable number.

788222861 is a deficient number, since it is larger than the sum of its proper divisors (1).

788222861 is an equidigital number, since it uses as much as digits as its factorization.

788222861 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 172032, while the sum is 44.

The square root of 788222861 is about 28075.3069618125. The cubic root of 788222861 is about 923.7398417548.

The spelling of 788222861 in words is "seven hundred eighty-eight million, two hundred twenty-two thousand, eight hundred sixty-one".