1388232404 has 24 divisors (see below), whose sum is σ = 2633857800. Its totient is φ = 636418944.

The previous prime is 1388232401. The next prime is 1388232409. The reversal of 1388232404 is 4042328831.

It can be written as a sum of positive squares in 4 ways, for example, as 116596804 + 1271635600 = 10798^2 + 35660^2 .

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1388232401) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 81839 + ... + 97334.

It is an arithmetic number, because the mean of its divisors is an integer number (109744075).

Almost surely, 2^1388232404 is an apocalyptic number.

It is an amenable number.

1388232404 is a deficient number, since it is larger than the sum of its proper divisors (1245625396).

1388232404 is a wasteful number, since it uses less digits than its factorization.

1388232404 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179339 (or 179337 counting only the distinct ones).

The product of its (nonzero) digits is 36864, while the sum is 35.

The square root of 1388232404 is about 37258.9909149456. The cubic root of 1388232404 is about 1115.5457667200.

The spelling of 1388232404 in words is "one billion, three hundred eighty-eight million, two hundred thirty-two thousand, four hundred four".