389206847 has 2 divisors, whose sum is σ = 389206848. Its totient is φ = 389206846.

The previous prime is 389206801. The next prime is 389206903. The reversal of 389206847 is 748602983.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389206847 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389206247) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194603423 + 194603424.

It is an arithmetic number, because the mean of its divisors is an integer number (194603424).

Almost surely, 2^389206847 is an apocalyptic number.

389206847 is a deficient number, since it is larger than the sum of its proper divisors (1).

389206847 is an equidigital number, since it uses as much as digits as its factorization.

389206847 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 580608, while the sum is 47.

The square root of 389206847 is about 19728.3260060249. The cubic root of 389206847 is about 730.1187315478.

The spelling of 389206847 in words is "three hundred eighty-nine million, two hundred six thousand, eight hundred forty-seven".