788406089 has 2 divisors, whose sum is σ = 788406090. Its totient is φ = 788406088.

The previous prime is 788406079. The next prime is 788406107. The reversal of 788406089 is 980604887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 600250000 + 188156089 = 24500^2 + 13717^2 .

It is a cyclic number.

It is not a de Polignac number, because 788406089 - 2⁸ = 788405833 is a prime.

It is a super-2 number, since 2×788406089² = 1243168322344551842, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (788406079) 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, 394203044 + 394203045.

It is an arithmetic number, because the mean of its divisors is an integer number (394203045).

Almost surely, 2^788406089 is an apocalyptic number.

It is an amenable number.

788406089 is a deficient number, since it is larger than the sum of its proper divisors (1).

788406089 is an equidigital number, since it uses as much as digits as its factorization.

788406089 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 774144, while the sum is 50.

The square root of 788406089 is about 28078.5699244103. The cubic root of 788406089 is about 923.8114128375.

The spelling of 788406089 in words is "seven hundred eighty-eight million, four hundred six thousand, eighty-nine".