388894411 has 4 divisors (see below), whose sum is σ = 401439424. Its totient is φ = 376349400.

The previous prime is 388894393. The next prime is 388894417. The reversal of 388894411 is 114498883.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 114498883 = 19 ⋅6026257.

It is a cyclic number.

It is not a de Polignac number, because 388894411 - 2⁹ = 388893899 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (388894417) 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, 6272460 + ... + 6272521.

It is an arithmetic number, because the mean of its divisors is an integer number (100359856).

Almost surely, 2^388894411 is an apocalyptic number.

388894411 is a gapful number since it is divisible by the number (31) formed by its first and last digit.

388894411 is a deficient number, since it is larger than the sum of its proper divisors (12545013).

388894411 is a wasteful number, since it uses less digits than its factorization.

388894411 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 12545012.

The product of its digits is 221184, while the sum is 46.

The square root of 388894411 is about 19720.4059542394. The cubic root of 388894411 is about 729.9233115161.

The spelling of 388894411 in words is "three hundred eighty-eight million, eight hundred ninety-four thousand, four hundred eleven".