388942 has 4 divisors (see below), whose sum is σ = 583416. Its totient is φ = 194470.

The previous prime is 388937. The next prime is 388961. The reversal of 388942 is 249883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 249883 = 17 ⋅14699.

It is a junction number, because it is equal to n+sod(n) for n = 388898 and 388907.

It is a congruent number.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97234 + ... + 97237.

It is an arithmetic number, because the mean of its divisors is an integer number (145854).

2³⁸⁸⁹⁴² is an apocalyptic number.

388942 is a deficient number, since it is larger than the sum of its proper divisors (194474).

388942 is a wasteful number, since it uses less digits than its factorization.

388942 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194473.

The product of its digits is 13824, while the sum is 34.

The square root of 388942 is about 623.6521466330. The cubic root of 388942 is about 72.9953083868.

The spelling of 388942 in words is "three hundred eighty-eight thousand, nine hundred forty-two".