388695039 has 4 divisors (see below), whose sum is σ = 518260056. Its totient is φ = 259130024.

The previous prime is 388695031. The next prime is 388695049. The reversal of 388695039 is 930596883.

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

It is a cyclic number.

It is not a de Polignac number, because 388695039 - 2³ = 388695031 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 388694982 and 388695000.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388695031) 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, 64782504 + ... + 64782509.

It is an arithmetic number, because the mean of its divisors is an integer number (129565014).

Almost surely, 2^388695039 is an apocalyptic number.

388695039 is a deficient number, since it is larger than the sum of its proper divisors (129565017).

388695039 is a wasteful number, since it uses less digits than its factorization.

388695039 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 129565016.

The product of its (nonzero) digits is 1399680, while the sum is 51.

The square root of 388695039 is about 19715.3503392661. The cubic root of 388695039 is about 729.7985551623.

The spelling of 388695039 in words is "three hundred eighty-eight million, six hundred ninety-five thousand, thirty-nine".