388469142 has 64 divisors (see below), whose sum is σ = 938831040. Its totient is φ = 118568448.

The previous prime is 388469141. The next prime is 388469161. The reversal of 388469142 is 241964883.

It is a happy number.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (388469141) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 28248 + ... + 39684.

It is an arithmetic number, because the mean of its divisors is an integer number (14669235).

Almost surely, 2^388469142 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 388469142, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (469415520).

388469142 is an abundant number, since it is smaller than the sum of its proper divisors (550361898).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

388469142 is a wasteful number, since it uses less digits than its factorization.

388469142 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 11502 (or 11496 counting only the distinct ones).

The product of its digits is 331776, while the sum is 45.

The square root of 388469142 is about 19709.6205442926. The cubic root of 388469142 is about 729.6571493171.

The spelling of 388469142 in words is "three hundred eighty-eight million, four hundred sixty-nine thousand, one hundred forty-two".