388939146 has 8 divisors (see below), whose sum is σ = 777878304. Its totient is φ = 129646380.

The previous prime is 388939127. The next prime is 388939157. The reversal of 388939146 is 641939883.

It is a sphenic number, since it is the product of 3 distinct primes.

388939146 is an admirable number.

It is an unprimeable number.

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 3 ways as a sum of consecutive naturals, for example, 32411590 + ... + 32411601.

It is an arithmetic number, because the mean of its divisors is an integer number (97234788).

Almost surely, 2^388939146 is an apocalyptic number.

388939146 is a primitive abundant number, since it is smaller than the sum of its proper divisors, none of which is abundant.

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388939146 is a wasteful number, since it uses less digits than its factorization.

388939146 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64823196.

The product of its digits is 1119744, while the sum is 51.

The square root of 388939146 is about 19721.5401528380. The cubic root of 388939146 is about 729.9512984336.

The spelling of 388939146 in words is "three hundred eighty-eight million, nine hundred thirty-nine thousand, one hundred forty-six".