388912141 has 2 divisors, whose sum is σ = 388912142. Its totient is φ = 388912140.

The previous prime is 388912123. The next prime is 388912171. The reversal of 388912141 is 141219883.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 363054916 + 25857225 = 19054^2 + 5085^2 .

It is a cyclic number.

It is not a de Polignac number, because 388912141 - 2⁹ = 388911629 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 388912141.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (388912171) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 194456070 + 194456071.

It is an arithmetic number, because the mean of its divisors is an integer number (194456071).

Almost surely, 2^388912141 is an apocalyptic number.

It is an amenable number.

388912141 is a deficient number, since it is larger than the sum of its proper divisors (1).

388912141 is an equidigital number, since it uses as much as digits as its factorization.

388912141 is an evil number, because the sum of its binary digits is even.

The product of its digits is 13824, while the sum is 37.

The square root of 388912141 is about 19720.8554834723. The cubic root of 388912141 is about 729.9344039389.

The spelling of 388912141 in words is "three hundred eighty-eight million, nine hundred twelve thousand, one hundred forty-one".