389387357 has 2 divisors, whose sum is σ = 389387358. Its totient is φ = 389387356.

The previous prime is 389387347. The next prime is 389387389. The reversal of 389387357 is 753783983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 312193561 + 77193796 = 17669^2 + 8786^2 .

It is a cyclic number.

It is not a de Polignac number, because 389387357 - 2⁸ = 389387101 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 389387299 and 389387308.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389387347) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194693678 + 194693679.

It is an arithmetic number, because the mean of its divisors is an integer number (194693679).

Almost surely, 2^389387357 is an apocalyptic number.

It is an amenable number.

389387357 is a deficient number, since it is larger than the sum of its proper divisors (1).

389387357 is an equidigital number, since it uses as much as digits as its factorization.

389387357 is an evil number, because the sum of its binary digits is even.

The product of its digits is 3810240, while the sum is 53.

The square root of 389387357 is about 19732.9003696872. The cubic root of 389387357 is about 730.2315878723.

The spelling of 389387357 in words is "three hundred eighty-nine million, three hundred eighty-seven thousand, three hundred fifty-seven".