388039313 has 8 divisors (see below), whose sum is σ = 399545832. Its totient is φ = 376586496.

The previous prime is 388039247. The next prime is 388039319. The reversal of 388039313 is 313930883.

It can be written as a sum of positive squares in 4 ways, for example, as 95902849 + 292136464 = 9793^2 + 17092^2 .

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 388039313 - 2¹⁶ = 387973777 is a prime.

It is not an unprimeable number, because it can be changed into a prime (388039319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1481 + ... + 27897.

It is an arithmetic number, because the mean of its divisors is an integer number (49943229).

Almost surely, 2^388039313 is an apocalyptic number.

It is an amenable number.

388039313 is a deficient number, since it is larger than the sum of its proper divisors (11506519).

388039313 is a wasteful number, since it uses less digits than its factorization.

388039313 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 26851.

The product of its (nonzero) digits is 46656, while the sum is 38.

The square root of 388039313 is about 19698.7134859107. The cubic root of 388039313 is about 729.3879357012.

The spelling of 388039313 in words is "three hundred eighty-eight million, thirty-nine thousand, three hundred thirteen".