388674889 has 2 divisors, whose sum is σ = 388674890. Its totient is φ = 388674888.

The previous prime is 388674823. The next prime is 388674941. The reversal of 388674889 is 988476883.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 387420489 + 1254400 = 19683^2 + 1120^2 .

It is a cyclic number.

It is not a de Polignac number, because 388674889 - 2¹⁷ = 388543817 is a prime.

It is not a weakly prime, because it can be changed into another prime (388674809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194337444 + 194337445.

It is an arithmetic number, because the mean of its divisors is an integer number (194337445).

Almost surely, 2^388674889 is an apocalyptic number.

It is an amenable number.

388674889 is a deficient number, since it is larger than the sum of its proper divisors (1).

388674889 is an equidigital number, since it uses as much as digits as its factorization.

388674889 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 18579456, while the sum is 61.

The square root of 388674889 is about 19714.8393095151. The cubic root of 388674889 is about 729.7859439945.

The spelling of 388674889 in words is "three hundred eighty-eight million, six hundred seventy-four thousand, eight hundred eighty-nine".