804039641 has 4 divisors (see below), whose sum is σ = 804103092. Its totient is φ = 803976192.

The previous prime is 804039629. The next prime is 804039659. The reversal of 804039641 is 146930408.

It is a semiprime because it is the product of two primes, and also a brilliant number, because the two primes have the same length.

It can be written as a sum of positive squares in 2 ways, for example, as 75255625 + 728784016 = 8675^2 + 26996^2 .

It is a cyclic number.

It is not a de Polignac number, because 804039641 - 2¹⁸ = 803777497 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (804039601) 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, 5480 + ... + 40473.

It is an arithmetic number, because the mean of its divisors is an integer number (201025773).

Almost surely, 2^804039641 is an apocalyptic number.

It is an amenable number.

804039641 is a deficient number, since it is larger than the sum of its proper divisors (63451).

804039641 is a wasteful number, since it uses less digits than its factorization.

804039641 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 63450.

The product of its (nonzero) digits is 20736, while the sum is 35.

The square root of 804039641 is about 28355.5927640386. The cubic root of 804039641 is about 929.8776734316.

The spelling of 804039641 in words is "eight hundred four million, thirty-nine thousand, six hundred forty-one".