804905079 has 16 divisors (see below), whose sum is σ = 1221675264. Its totient is φ = 466611200.

The previous prime is 804905077. The next prime is 804905083. The reversal of 804905079 is 970509408.

It is not a de Polignac number, because 804905079 - 2¹ = 804905077 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 804905079.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (804905077) 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, 529482 + ... + 530999.

It is an arithmetic number, because the mean of its divisors is an integer number (76354704).

Almost surely, 2^804905079 is an apocalyptic number.

804905079 is a deficient number, since it is larger than the sum of its proper divisors (416770185).

804905079 is a wasteful number, since it uses less digits than its factorization.

804905079 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1060518.

The product of its (nonzero) digits is 90720, while the sum is 42.

The square root of 804905079 is about 28370.8491060807. The cubic root of 804905079 is about 930.2111822416.

The spelling of 804905079 in words is "eight hundred four million, nine hundred five thousand, seventy-nine".