819696405 has 16 divisors (see below), whose sum is σ = 1430743104. Its totient is φ = 397428480.

The previous prime is 819696391. The next prime is 819696421. The reversal of 819696405 is 504696918.

819696405 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is not a de Polignac number, because 819696405 - 2⁵ = 819696373 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 2483764 + ... + 2484093.

It is an arithmetic number, because the mean of its divisors is an integer number (89421444).

Almost surely, 2^819696405 is an apocalyptic number.

It is an amenable number.

819696405 is a deficient number, since it is larger than the sum of its proper divisors (611046699).

819696405 is a wasteful number, since it uses less digits than its factorization.

819696405 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4967876.

The product of its (nonzero) digits is 466560, while the sum is 48.

The square root of 819696405 is about 28630.3406371632. The cubic root of 819696405 is about 935.8746350744.

The spelling of 819696405 in words is "eight hundred nineteen million, six hundred ninety-six thousand, four hundred five".