804388451 has 4 divisors (see below), whose sum is σ = 806926272. Its totient is φ = 801850632.

The previous prime is 804388421. The next prime is 804388469. The reversal of 804388451 is 154883408.

It is a semiprime because it is the product of two primes.

It is a cyclic number.

It is not a de Polignac number, because 804388451 - 2¹⁸ = 804126307 is a prime.

It is a Duffinian number.

It is a junction number, because it is equal to n+sod(n) for n = 804388399 and 804388408.

It is not an unprimeable number, because it can be changed into a prime (804388421) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1268435 + ... + 1269068.

It is an arithmetic number, because the mean of its divisors is an integer number (201731568).

Almost surely, 2^804388451 is an apocalyptic number.

804388451 is a deficient number, since it is larger than the sum of its proper divisors (2537821).

804388451 is a wasteful number, since it uses less digits than its factorization.

804388451 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2537820.

The product of its (nonzero) digits is 122880, while the sum is 41.

The square root of 804388451 is about 28361.7427355937. The cubic root of 804388451 is about 930.0121210892.

The spelling of 804388451 in words is "eight hundred four million, three hundred eighty-eight thousand, four hundred fifty-one".