388133829 has 8 divisors (see below), whose sum is σ = 575013120. Its totient is φ = 258755868.

The previous prime is 388133827. The next prime is 388133831. The reversal of 388133829 is 928331883.

It is an interprime number because it is at equal distance from previous prime (388133827) and next prime (388133831).

It is not a de Polignac number, because 388133829 - 2¹ = 388133827 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388133821) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7187637 + ... + 7187690.

It is an arithmetic number, because the mean of its divisors is an integer number (71876640).

Almost surely, 2^388133829 is an apocalyptic number.

It is an amenable number.

388133829 is a deficient number, since it is larger than the sum of its proper divisors (186879291).

388133829 is a wasteful number, since it uses less digits than its factorization.

388133829 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14375336 (or 14375330 counting only the distinct ones).

The product of its digits is 248832, while the sum is 45.

The square root of 388133829 is about 19701.1123797617. The cubic root of 388133829 is about 729.4471506926.

The spelling of 388133829 in words is "three hundred eighty-eight million, one hundred thirty-three thousand, eight hundred twenty-nine".