388007973 has 12 divisors (see below), whose sum is σ = 560628588. Its totient is φ = 258592320.

The previous prime is 388007957. The next prime is 388007981. The reversal of 388007973 is 379700883.

It can be written as a sum of positive squares in 2 ways, for example, as 189282564 + 198725409 = 13758^2 + 14097^2 .

It is not a de Polignac number, because 388007973 - 2⁴ = 388007957 is a prime.

It is a super-2 number, since 2×388007973² = 301100374223137458, which contains 22 as substring.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388007903) 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, 47103 + ... + 54723.

It is an arithmetic number, because the mean of its divisors is an integer number (46719049).

Almost surely, 2^388007973 is an apocalyptic number.

It is an amenable number.

388007973 is a deficient number, since it is larger than the sum of its proper divisors (172620615).

388007973 is a wasteful number, since it uses less digits than its factorization.

388007973 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13284 (or 13281 counting only the distinct ones).

The product of its (nonzero) digits is 254016, while the sum is 45.

The square root of 388007973 is about 19697.9179864269. The cubic root of 388007973 is about 729.3682988306.

The spelling of 388007973 in words is "three hundred eighty-eight million, seven thousand, nine hundred seventy-three".