388338811 has 8 divisors (see below), whose sum is σ = 446070240. Its totient is φ = 331171008.

The previous prime is 388338793. The next prime is 388338817. The reversal of 388338811 is 118833883.

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

It is not a de Polignac number, because 388338811 - 2⁵ = 388338779 is a prime.

It is not an unprimeable number, because it can be changed into a prime (388338817) 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, 139426 + ... + 142183.

It is an arithmetic number, because the mean of its divisors is an integer number (55758780).

Almost surely, 2^388338811 is an apocalyptic number.

388338811 is a deficient number, since it is larger than the sum of its proper divisors (57731429).

388338811 is a wasteful number, since it uses less digits than its factorization.

388338811 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 281813.

The product of its digits is 110592, while the sum is 43.

The square root of 388338811 is about 19706.3139881613. The cubic root of 388338811 is about 729.5755404473.

The spelling of 388338811 in words is "three hundred eighty-eight million, three hundred thirty-eight thousand, eight hundred eleven".