389409077 has 2 divisors, whose sum is σ = 389409078. Its totient is φ = 389409076.

The previous prime is 389409049. The next prime is 389409107. The reversal of 389409077 is 770904983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 386279716 + 3129361 = 19654^2 + 1769^2 .

It is a cyclic number.

It is not a de Polignac number, because 389409077 - 2¹⁰ = 389408053 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389409017) 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, 194704538 + 194704539.

It is an arithmetic number, because the mean of its divisors is an integer number (194704539).

Almost surely, 2^389409077 is an apocalyptic number.

It is an amenable number.

389409077 is a deficient number, since it is larger than the sum of its proper divisors (1).

389409077 is an equidigital number, since it uses as much as digits as its factorization.

389409077 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 381024, while the sum is 47.

The square root of 389409077 is about 19733.4507119257. The cubic root of 389409077 is about 730.2451650424.

The spelling of 389409077 in words is "three hundred eighty-nine million, four hundred nine thousand, seventy-seven".