788009 has 2 divisors, whose sum is σ = 788010. Its totient is φ = 788008.

The previous prime is 787999. The next prime is 788023. The reversal of 788009 is 900887.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 714025 + 73984 = 845^2 + 272^2 .

It is a cyclic number.

It is not a de Polignac number, because 788009 - 2⁴ = 787993 is a prime.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (788089) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394004 + 394005.

It is an arithmetic number, because the mean of its divisors is an integer number (394005).

2⁷⁸⁸⁰⁰⁹ is an apocalyptic number.

It is an amenable number.

788009 is a deficient number, since it is larger than the sum of its proper divisors (1).

788009 is an equidigital number, since it uses as much as digits as its factorization.

788009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 4032, while the sum is 32.

The square root of 788009 is about 887.6987101489. The cubic root of 788009 is about 92.3656291021.

The spelling of 788009 in words is "seven hundred eighty-eight thousand, nine".