388435406 has 8 divisors (see below), whose sum is σ = 583056840. Its totient is φ = 194083128.

The previous prime is 388435403. The next prime is 388435423. The reversal of 388435406 is 604534883.

It is a happy number.

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

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388435403) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 63641 + ... + 69476.

It is an arithmetic number, because the mean of its divisors is an integer number (72882105).

Almost surely, 2^388435406 is an apocalyptic number.

388435406 is a deficient number, since it is larger than the sum of its proper divisors (194621434).

388435406 is a wasteful number, since it uses less digits than its factorization.

388435406 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 134578.

The product of its (nonzero) digits is 276480, while the sum is 41.

The square root of 388435406 is about 19708.7647000009. The cubic root of 388435406 is about 729.6360267246.

The spelling of 388435406 in words is "three hundred eighty-eight million, four hundred thirty-five thousand, four hundred six".