388990323 has 8 divisors (see below), whose sum is σ = 576282000. Its totient is φ = 259326864.

The previous prime is 388990307. The next prime is 388990333. The reversal of 388990323 is 323099883.

It is not a de Polignac number, because 388990323 - 2⁴ = 388990307 is a prime.

It is not an unprimeable number, because it can be changed into a prime (388990333) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 7203498 + ... + 7203551.

It is an arithmetic number, because the mean of its divisors is an integer number (72035250).

Almost surely, 2^388990323 is an apocalyptic number.

388990323 is a deficient number, since it is larger than the sum of its proper divisors (187291677).

388990323 is a wasteful number, since it uses less digits than its factorization.

388990323 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 14407058 (or 14407052 counting only the distinct ones).

The product of its (nonzero) digits is 279936, while the sum is 45.

The square root of 388990323 is about 19722.8376001021. The cubic root of 388990323 is about 729.9833129356.

The spelling of 388990323 in words is "three hundred eighty-eight million, nine hundred ninety thousand, three hundred twenty-three".