388106469 has 12 divisors (see below), whose sum is σ = 563007276. Its totient is φ = 257625792.

The previous prime is 388106443. The next prime is 388106473. The reversal of 388106469 is 964601883.

388106469 is a `hidden beast` number, since 3 + 88 + 106 + 469 = 666.

It can be written as a sum of positive squares in 2 ways, for example, as 71622369 + 316484100 = 8463^2 + 17790^2 .

It is not a de Polignac number, because 388106469 - 2¹⁵ = 388073701 is a prime.

It is a super-2 number, since 2×388106469² = 301253262559295922, which contains 22 as substring.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388106419) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 90442 + ... + 94635.

It is an arithmetic number, because the mean of its divisors is an integer number (46917273).

Almost surely, 2^388106469 is an apocalyptic number.

It is an amenable number.

388106469 is a deficient number, since it is larger than the sum of its proper divisors (174900807).

388106469 is a wasteful number, since it uses less digits than its factorization.

388106469 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 185316 (or 185313 counting only the distinct ones).

The product of its (nonzero) digits is 248832, while the sum is 45.

The square root of 388106469 is about 19700.4179904894. The cubic root of 388106469 is about 729.4300104336.

The spelling of 388106469 in words is "three hundred eighty-eight million, one hundred six thousand, four hundred sixty-nine".