388711073 has 4 divisors (see below), whose sum is σ = 392151108. Its totient is φ = 385271040.

The previous prime is 388711061. The next prime is 388711079. The reversal of 388711073 is 370117883.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 4276624 + 384434449 = 2068^2 + 19607^2 .

It is a cyclic number.

It is not a de Polignac number, because 388711073 - 2¹² = 388706977 is a prime.

It is a super-2 number, since 2×388711073² = 302192596545622658, which contains 22 as substring.

It is a Duffinian number.

It is a Curzon number.

It is not an unprimeable number, because it can be changed into a prime (388711079) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1719848 + ... + 1720073.

It is an arithmetic number, because the mean of its divisors is an integer number (98037777).

Almost surely, 2^388711073 is an apocalyptic number.

It is an amenable number.

388711073 is a deficient number, since it is larger than the sum of its proper divisors (3440035).

388711073 is a wasteful number, since it uses less digits than its factorization.

388711073 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3440034.

The product of its (nonzero) digits is 28224, while the sum is 38.

The square root of 388711073 is about 19715.7569725334. The cubic root of 388711073 is about 729.8085899607.

The spelling of 388711073 in words is "three hundred eighty-eight million, seven hundred eleven thousand, seventy-three".