388840334 has 4 divisors (see below), whose sum is σ = 583260504. Its totient is φ = 194420166.

The previous prime is 388840297. The next prime is 388840343. The reversal of 388840334 is 433048883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 433048883 = 113 ⋅3832291.

It is a junction number, because it is equal to n+sod(n) for n = 388840291 and 388840300.

It is a congruent 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 as a sum of consecutive naturals, namely, 97210082 + ... + 97210085.

It is an arithmetic number, because the mean of its divisors is an integer number (145815126).

Almost surely, 2^388840334 is an apocalyptic number.

388840334 is a deficient number, since it is larger than the sum of its proper divisors (194420170).

388840334 is a wasteful number, since it uses less digits than its factorization.

388840334 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194420169.

The product of its (nonzero) digits is 221184, while the sum is 41.

The square root of 388840334 is about 19719.0348141079. The cubic root of 388840334 is about 729.8894772314.

The spelling of 388840334 in words is "three hundred eighty-eight million, eight hundred forty thousand, three hundred thirty-four".