389235487 has 2 divisors, whose sum is σ = 389235488. Its totient is φ = 389235486.

The previous prime is 389235481. The next prime is 389235493. The reversal of 389235487 is 784532983.

It is a balanced prime because it is at equal distance from previous prime (389235481) and next prime (389235493).

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-389235487 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 389235487.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (389235481) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194617743 + 194617744.

It is an arithmetic number, because the mean of its divisors is an integer number (194617744).

Almost surely, 2^389235487 is an apocalyptic number.

389235487 is a deficient number, since it is larger than the sum of its proper divisors (1).

389235487 is an equidigital number, since it uses as much as digits as its factorization.

389235487 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1451520, while the sum is 49.

The square root of 389235487 is about 19729.0518525346. The cubic root of 389235487 is about 730.1366398381.

The spelling of 389235487 in words is "three hundred eighty-nine million, two hundred thirty-five thousand, four hundred eighty-seven".