389440963 has 2 divisors, whose sum is σ = 389440964. Its totient is φ = 389440962.

The previous prime is 389440939. The next prime is 389441009. The reversal of 389440963 is 369044983.

It is an a-pointer prime, because the next prime (389441009) can be obtained adding 389440963 to its sum of digits (46).

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 389440963 - 2⁹ = 389440451 is a prime.

It is not a weakly prime, because it can be changed into another prime (389440903) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194720481 + 194720482.

It is an arithmetic number, because the mean of its divisors is an integer number (194720482).

Almost surely, 2^389440963 is an apocalyptic number.

389440963 is a deficient number, since it is larger than the sum of its proper divisors (1).

389440963 is an equidigital number, since it uses as much as digits as its factorization.

389440963 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 559872, while the sum is 46.

The square root of 389440963 is about 19734.2586128793. The cubic root of 389440963 is about 730.2650960637.

The spelling of 389440963 in words is "three hundred eighty-nine million, four hundred forty thousand, nine hundred sixty-three".