788398057 has 2 divisors, whose sum is σ = 788398058. Its totient is φ = 788398056.

The previous prime is 788398049. The next prime is 788398063. The reversal of 788398057 is 750893887.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 752350041 + 36048016 = 27429^2 + 6004^2 .

It is a cyclic number.

It is not a de Polignac number, because 788398057 - 2³ = 788398049 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 788397989 and 788398007.

It is not a weakly prime, because it can be changed into another prime (788398087) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394199028 + 394199029.

It is an arithmetic number, because the mean of its divisors is an integer number (394199029).

Almost surely, 2^788398057 is an apocalyptic number.

It is an amenable number.

788398057 is a deficient number, since it is larger than the sum of its proper divisors (1).

788398057 is an equidigital number, since it uses as much as digits as its factorization.

788398057 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3386880, while the sum is 55.

The square root of 788398057 is about 28078.4268968188. The cubic root of 788398057 is about 923.8082756731.

The spelling of 788398057 in words is "seven hundred eighty-eight million, three hundred ninety-eight thousand, fifty-seven".