389862961 has 2 divisors, whose sum is σ = 389862962. Its totient is φ = 389862960.

The previous prime is 389862937. The next prime is 389863013. The reversal of 389862961 is 169268983.

It is a happy number.

It is an a-pointer prime, because the next prime (389863013) can be obtained adding 389862961 to its sum of digits (52).

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 364046400 + 25816561 = 19080^2 + 5081^2 .

It is a cyclic number.

It is not a de Polignac number, because 389862961 - 2¹³ = 389854769 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 389862899 and 389862908.

It is not a weakly prime, because it can be changed into another prime (389862661) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194931480 + 194931481.

It is an arithmetic number, because the mean of its divisors is an integer number (194931481).

Almost surely, 2^389862961 is an apocalyptic number.

It is an amenable number.

389862961 is a deficient number, since it is larger than the sum of its proper divisors (1).

389862961 is an equidigital number, since it uses as much as digits as its factorization.

389862961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 1119744, while the sum is 52.

The square root of 389862961 is about 19744.9477335343. The cubic root of 389862961 is about 730.5287724573.

The spelling of 389862961 in words is "three hundred eighty-nine million, eight hundred sixty-two thousand, nine hundred sixty-one".