388494922 has 4 divisors (see below), whose sum is σ = 582742386. Its totient is φ = 194247460.

The previous prime is 388494917. The next prime is 388494937. The reversal of 388494922 is 229494883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 229494883 = 17 ⋅13499699.

It can be written as a sum of positive squares in only one way, i.e., 367067281 + 21427641 = 19159^2 + 4629^2 .

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, 97123729 + ... + 97123732.

Almost surely, 2^388494922 is an apocalyptic number.

388494922 is a deficient number, since it is larger than the sum of its proper divisors (194247464).

388494922 is a wasteful number, since it uses less digits than its factorization.

388494922 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194247463.

The product of its digits is 995328, while the sum is 49.

The square root of 388494922 is about 19710.2745287832. The cubic root of 388494922 is about 729.6732897199.

The spelling of 388494922 in words is "three hundred eighty-eight million, four hundred ninety-four thousand, nine hundred twenty-two".