389008481 has 2 divisors, whose sum is σ = 389008482. Its totient is φ = 389008480.

The previous prime is 389008457. The next prime is 389008507. The reversal of 389008481 is 184800983.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 245392225 + 143616256 = 15665^2 + 11984^2 .

It is a cyclic number.

It is not a de Polignac number, because 389008481 - 2¹⁰ = 389007457 is a prime.

It is a super-2 number, since 2×389008481² = 302655196579854722, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (389008421) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194504240 + 194504241.

It is an arithmetic number, because the mean of its divisors is an integer number (194504241).

Almost surely, 2^389008481 is an apocalyptic number.

It is an amenable number.

389008481 is a deficient number, since it is larger than the sum of its proper divisors (1).

389008481 is an equidigital number, since it uses as much as digits as its factorization.

389008481 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 55296, while the sum is 41.

The square root of 389008481 is about 19723.2979240288. The cubic root of 389008481 is about 729.9946712565.

The spelling of 389008481 in words is "three hundred eighty-nine million, eight thousand, four hundred eighty-one".