388881941 has 4 divisors (see below), whose sum is σ = 444436512. Its totient is φ = 333327372.

The previous prime is 388881937. The next prime is 388881943. The reversal of 388881941 is 149188883.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is not a de Polignac number, because 388881941 - 2² = 388881937 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 388881941.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388881943) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 27777275 + ... + 27777288.

It is an arithmetic number, because the mean of its divisors is an integer number (111109128).

Almost surely, 2^388881941 is an apocalyptic number.

It is an amenable number.

388881941 is a deficient number, since it is larger than the sum of its proper divisors (55554571).

388881941 is an equidigital number, since it uses as much as digits as its factorization.

388881941 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 55554570.

The product of its digits is 442368, while the sum is 50.

The square root of 388881941 is about 19720.0897817429. The cubic root of 388881941 is about 729.9155097060.

The spelling of 388881941 in words is "three hundred eighty-eight million, eight hundred eighty-one thousand, nine hundred forty-one".