789427057 has 2 divisors, whose sum is σ = 789427058. Its totient is φ = 789427056.

The previous prime is 789427049. The next prime is 789427081. The reversal of 789427057 is 750724987.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 521482896 + 267944161 = 22836^2 + 16369^2 .

It is a cyclic number.

It is not a de Polignac number, because 789427057 - 2³ = 789427049 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 789427057.

It is not a weakly prime, because it can be changed into another prime (789427007) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 394713528 + 394713529.

It is an arithmetic number, because the mean of its divisors is an integer number (394713529).

Almost surely, 2^789427057 is an apocalyptic number.

It is an amenable number.

789427057 is a deficient number, since it is larger than the sum of its proper divisors (1).

789427057 is an equidigital number, since it uses as much as digits as its factorization.

789427057 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 987840, while the sum is 49.

The square root of 789427057 is about 28096.7445979067. The cubic root of 789427057 is about 924.2100124354.

The spelling of 789427057 in words is "seven hundred eighty-nine million, four hundred twenty-seven thousand, fifty-seven".