388862973 has 6 divisors (see below), whose sum is σ = 561690974. Its totient is φ = 259241976.

The previous prime is 388862959. The next prime is 388862989. The reversal of 388862973 is 379268883.

388862973 is a `hidden beast` number, since 3 + 8 + 8 + 8 + 629 + 7 + 3 = 666.

It can be written as a sum of positive squares in only one way, i.e., 269682084 + 119180889 = 16422^2 + 10917^2 .

It is not a de Polignac number, because 388862973 - 2⁵ = 388862941 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388862273) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 21603490 + ... + 21603507.

Almost surely, 2^388862973 is an apocalyptic number.

It is an amenable number.

388862973 is a deficient number, since it is larger than the sum of its proper divisors (172828001).

388862973 is a wasteful number, since it uses less digits than its factorization.

388862973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 43207003 (or 43207000 counting only the distinct ones).

The product of its digits is 3483648, while the sum is 54.

The square root of 388862973 is about 19719.6088450050. The cubic root of 388862973 is about 729.9036421262.

The spelling of 388862973 in words is "three hundred eighty-eight million, eight hundred sixty-two thousand, nine hundred seventy-three".