388191047 has 8 divisors (see below), whose sum is σ = 393179616. Its totient is φ = 383229952.

The previous prime is 388191019. The next prime is 388191053. The reversal of 388191047 is 740191883.

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 388191047 - 2¹⁴ = 388174663 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 388190995 and 388191013.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388191017) 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, 22358 + ... + 35724.

It is an arithmetic number, because the mean of its divisors is an integer number (49147452).

Almost surely, 2^388191047 is an apocalyptic number.

388191047 is a deficient number, since it is larger than the sum of its proper divisors (4988569).

388191047 is a wasteful number, since it uses less digits than its factorization.

388191047 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 13737.

The product of its (nonzero) digits is 48384, while the sum is 41.

The square root of 388191047 is about 19702.5644777526. The cubic root of 388191047 is about 729.4829935326.

The spelling of 388191047 in words is "three hundred eighty-eight million, one hundred ninety-one thousand, forty-seven".