388606406 has 4 divisors (see below), whose sum is σ = 582909612. Its totient is φ = 194303202.

The previous prime is 388606399. The next prime is 388606423. The reversal of 388606406 is 604606883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 604606883 = 11311 ⋅53453.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 97151600 + ... + 97151603.

It is an arithmetic number, because the mean of its divisors is an integer number (145727403).

Almost surely, 2^388606406 is an apocalyptic number.

388606406 is a deficient number, since it is larger than the sum of its proper divisors (194303206).

388606406 is a wasteful number, since it uses less digits than its factorization.

388606406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 194303205.

The product of its (nonzero) digits is 165888, while the sum is 41.

The square root of 388606406 is about 19713.1023940931. The cubic root of 388606406 is about 729.7430796643.

The spelling of 388606406 in words is "three hundred eighty-eight million, six hundred six thousand, four hundred six".