388817 has 8 divisors (see below), whose sum is σ = 456960. Its totient is φ = 326160.

The previous prime is 388813. The next prime is 388823. The reversal of 388817 is 718883.

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 388817 - 2² = 388813 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388813) 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, 1217 + ... + 1502.

It is an arithmetic number, because the mean of its divisors is an integer number (57120).

2³⁸⁸⁸¹⁷ is an apocalyptic number.

It is an amenable number.

388817 is a deficient number, since it is larger than the sum of its proper divisors (68143).

388817 is a wasteful number, since it uses less digits than its factorization.

388817 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2743.

The product of its digits is 10752, while the sum is 35.

The square root of 388817 is about 623.5519224571. The cubic root of 388817 is about 72.9874876910.

The spelling of 388817 in words is "three hundred eighty-eight thousand, eight hundred seventeen".