388794321 has 12 divisors (see below), whose sum is σ = 591149520. Its totient is φ = 245554200.

The previous prime is 388794319. The next prime is 388794361. The reversal of 388794321 is 123497883.

It is not a de Polignac number, because 388794321 - 2¹ = 388794319 is a prime.

It is a super-2 number, since 2×388794321² = 302322048083702082, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (388794361) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 1136655 + ... + 1136996.

It is an arithmetic number, because the mean of its divisors is an integer number (49262460).

Almost surely, 2^388794321 is an apocalyptic number.

It is an amenable number.

388794321 is a deficient number, since it is larger than the sum of its proper divisors (202355199).

388794321 is a wasteful number, since it uses less digits than its factorization.

388794321 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2273676 (or 2273673 counting only the distinct ones).

The product of its digits is 290304, while the sum is 45.

The square root of 388794321 is about 19717.8680642710. The cubic root of 388794321 is about 729.8606858687.

The spelling of 388794321 in words is "three hundred eighty-eight million, seven hundred ninety-four thousand, three hundred twenty-one".