804388 has 24 divisors (see below), whose sum is σ = 1568000. Its totient is φ = 358560.

The previous prime is 804383. The next prime is 804409. The reversal of 804388 is 883408.

It is a Harshad number since it is a multiple of its sum of digits (31).

It is not an unprimeable number, because it can be changed into a prime (804383) by changing a digit.

804388 is an untouchable number, because it is not equal to the sum of proper divisors of any number.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 1363 + ... + 1861.

2⁸⁰⁴³⁸⁸ is an apocalyptic number.

It is an amenable number.

804388 is a deficient number, since it is larger than the sum of its proper divisors (763612).

804388 is a wasteful number, since it uses less digits than its factorization.

804388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 547 (or 545 counting only the distinct ones).

The product of its (nonzero) digits is 6144, while the sum is 31.

The square root of 804388 is about 896.8768031341. The cubic root of 804388 is about 93.0011947278.

Subtracting from 804388 its sum of digits (31), we obtain a cube (804357 = 93³).

The spelling of 804388 in words is "eight hundred four thousand, three hundred eighty-eight".