388476973 has 4 divisors (see below), whose sum is σ = 388516828. Its totient is φ = 388437120.

The previous prime is 388476961. The next prime is 388477003. The reversal of 388476973 is 379674883.

It is the 8047-th star number.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 219424969 + 169052004 = 14813^2 + 13002^2 .

It is a cyclic number.

It is not a de Polignac number, because 388476973 - 2⁵ = 388476941 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 (388476773) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 5563 + ... + 28423.

It is an arithmetic number, because the mean of its divisors is an integer number (97129207).

Almost surely, 2^388476973 is an apocalyptic number.

It is an amenable number.

388476973 is a deficient number, since it is larger than the sum of its proper divisors (39855).

388476973 is a wasteful number, since it uses less digits than its factorization.

388476973 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 39854.

The product of its digits is 6096384, while the sum is 55.

The square root of 388476973 is about 19709.8192026208. The cubic root of 388476973 is about 729.6620522434.

The spelling of 388476973 in words is "three hundred eighty-eight million, four hundred seventy-six thousand, nine hundred seventy-three".