388800845 has 8 divisors (see below), whose sum is σ = 475364376. Its totient is φ = 305171776.

The previous prime is 388800821. The next prime is 388800887. The reversal of 388800845 is 548008883.

It can be written as a sum of positive squares in 4 ways, for example, as 44809636 + 343991209 = 6694^2 + 18547^2 .

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-388800845 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 388800796 and 388800805.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 733322 + ... + 733851.

It is an arithmetic number, because the mean of its divisors is an integer number (59420547).

Almost surely, 2^388800845 is an apocalyptic number.

It is an amenable number.

388800845 is a deficient number, since it is larger than the sum of its proper divisors (86563531).

388800845 is a wasteful number, since it uses less digits than its factorization.

388800845 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1467231.

The product of its (nonzero) digits is 245760, while the sum is 44.

The square root of 388800845 is about 19718.0334972836. The cubic root of 388800845 is about 729.8647682195.

The spelling of 388800845 in words is "three hundred eighty-eight million, eight hundred thousand, eight hundred forty-five".