788669281 has 2 divisors, whose sum is σ = 788669282. Its totient is φ = 788669280.

The previous prime is 788669257. The next prime is 788669341. The reversal of 788669281 is 182966887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 786297681 + 2371600 = 28041^2 + 1540^2 .

It is a cyclic number.

It is not a de Polignac number, because 788669281 - 2¹¹ = 788667233 is a prime.

It is a super-2 number, since 2×788669281² = 1243998469586113922, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (788669201) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394334640 + 394334641.

It is an arithmetic number, because the mean of its divisors is an integer number (394334641).

Almost surely, 2^788669281 is an apocalyptic number.

It is an amenable number.

788669281 is a deficient number, since it is larger than the sum of its proper divisors (1).

788669281 is an equidigital number, since it uses as much as digits as its factorization.

788669281 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2322432, while the sum is 55.

The square root of 788669281 is about 28083.2562392611. The cubic root of 788669281 is about 923.9141994285.

The spelling of 788669281 in words is "seven hundred eighty-eight million, six hundred sixty-nine thousand, two hundred eighty-one".