84393963405 has 24 divisors (see below), whose sum is σ = 147624923160. Its totient is φ = 44597174400.

The previous prime is 84393963397. The next prime is 84393963527. The reversal of 84393963405 is 50436939348.

It can be written as a sum of positive squares in 4 ways, for example, as 533332836 + 83860630569 = 23094^2 + 289587^2 .

It is not a de Polignac number, because 84393963405 - 2³ = 84393963397 is a prime.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 8597946 + ... + 8607755.

It is an arithmetic number, because the mean of its divisors is an integer number (6151038465).

Almost surely, 2^84393963405 is an apocalyptic number.

It is an amenable number.

84393963405 is a deficient number, since it is larger than the sum of its proper divisors (63230959755).

84393963405 is a wasteful number, since it uses less digits than its factorization.

84393963405 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 17205821 (or 17205818 counting only the distinct ones).

The product of its (nonzero) digits is 8398080, while the sum is 54.

The spelling of 84393963405 in words is "eighty-four billion, three hundred ninety-three million, nine hundred sixty-three thousand, four hundred five".