804919453 has 18 divisors (see below), whose sum is σ = 881738286. Its totient is φ = 734452992.

The previous prime is 804919429. The next prime is 804919469. The reversal of 804919453 is 354919408.

It is a happy number.

It can be written as a sum of positive squares in 9 ways, for example, as 785232484 + 19686969 = 28022^2 + 4437^2 .

It is not a de Polignac number, because 804919453 - 2²¹ = 802822301 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804419453) by changing a digit.

It is a polite number, since it can be written in 17 ways as a sum of consecutive naturals, for example, 2157775 + ... + 2158147.

Almost surely, 2^804919453 is an apocalyptic number.

It is an amenable number.

804919453 is a deficient number, since it is larger than the sum of its proper divisors (76818833).

804919453 is a wasteful number, since it uses less digits than its factorization.

804919453 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 625 (or 499 counting only the distinct ones).

The product of its (nonzero) digits is 155520, while the sum is 43.

The square root of 804919453 is about 28371.1024283513. The cubic root of 804919453 is about 930.2167194477.

The spelling of 804919453 in words is "eight hundred four million, nine hundred nineteen thousand, four hundred fifty-three".