1288440404 has 48 divisors (see below), whose sum is σ = 2506629888. Its totient is φ = 576373248.

The previous prime is 1288440403. The next prime is 1288440409. The reversal of 1288440404 is 4040448821.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (1288440403) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 258722 + ... + 263654.

It is an arithmetic number, because the mean of its divisors is an integer number (52221456).

Almost surely, 2^1288440404 is an apocalyptic number.

It is an amenable number.

1288440404 is a deficient number, since it is larger than the sum of its proper divisors (1218189484).

1288440404 is a wasteful number, since it uses less digits than its factorization.

1288440404 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5144 (or 5142 counting only the distinct ones).

The product of its (nonzero) digits is 32768, while the sum is 35.

The square root of 1288440404 is about 35894.8520542988. The cubic root of 1288440404 is about 1088.1483598239.

The spelling of 1288440404 in words is "one billion, two hundred eighty-eight million, four hundred forty thousand, four hundred four".