83894447812 has 18 divisors (see below), whose sum is σ = 170785126302. Its totient is φ = 35954763264.

The previous prime is 83894447783. The next prime is 83894447827. The reversal of 83894447812 is 21874449838.

It can be written as a sum of positive squares in only one way, i.e., 83142262336 + 752185476 = 288344^2 + 27426^2 .

It is an unprimeable number.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 214016253 + ... + 214016644.

Almost surely, 2^83894447812 is an apocalyptic number.

It is an amenable number.

83894447812 is an abundant number, since it is smaller than the sum of its proper divisors (86890678490).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

83894447812 is a wasteful number, since it uses less digits than its factorization.

83894447812 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 428032915 (or 428032906 counting only the distinct ones).

The product of its digits is 12386304, while the sum is 58.

The spelling of 83894447812 in words is "eighty-three billion, eight hundred ninety-four million, four hundred forty-seven thousand, eight hundred twelve".