388961 has 2 divisors, whose sum is σ = 388962. Its totient is φ = 388960.

The previous prime is 388937. The next prime is 388963. The reversal of 388961 is 169883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 295936 + 93025 = 544^2 + 305^2 .

It is a cyclic number.

It is not a de Polignac number, because 388961 - 2⁶ = 388897 is a prime.

Together with 388963, it forms a pair of twin primes.

It is a Chen prime.

It is an Ulam number.

It is not a weakly prime, because it can be changed into another prime (388963) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194480 + 194481.

It is an arithmetic number, because the mean of its divisors is an integer number (194481).

2³⁸⁸⁹⁶¹ is an apocalyptic number.

It is an amenable number.

388961 is a deficient number, since it is larger than the sum of its proper divisors (1).

388961 is an equidigital number, since it uses as much as digits as its factorization.

388961 is an evil number, because the sum of its binary digits is even.

The product of its digits is 10368, while the sum is 35.

The square root of 388961 is about 623.6673792977. The cubic root of 388961 is about 72.9964969858.

The spelling of 388961 in words is "three hundred eighty-eight thousand, nine hundred sixty-one".