83869812 has 36 divisors (see below), whose sum is σ = 228313540. Its totient is φ = 25805952.

The previous prime is 83869801. The next prime is 83869829. The reversal of 83869812 is 21896838.

It can be written as a sum of positive squares in 2 ways, for example, as 47941776 + 35928036 = 6924^2 + 5994^2 .

It is a tau number, because it is divible by the number of its divisors (36).

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 89137 + ... + 90072.

Almost surely, 2^83869812 is an apocalyptic number.

It is an amenable number.

83869812 is an abundant number, since it is smaller than the sum of its proper divisors (144443728).

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

83869812 is a wasteful number, since it uses less digits than its factorization.

83869812 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 179232 (or 179227 counting only the distinct ones).

The product of its digits is 165888, while the sum is 45.

The square root of 83869812 is about 9158.0462982014. The cubic root of 83869812 is about 437.7255427001.

It can be divided in two parts, 83869 and 812, that added together give a square (84681 = 291²).

The spelling of 83869812 in words is "eighty-three million, eight hundred sixty-nine thousand, eight hundred twelve".