83819388 has 12 divisors (see below), whose sum is σ = 195578600. Its totient is φ = 27939792.

The previous prime is 83819387. The next prime is 83819419. The reversal of 83819388 is 88391838.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (83819387) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 3492463 + ... + 3492486.

Almost surely, 2^83819388 is an apocalyptic number.

It is an amenable number.

83819388 is an abundant number, since it is smaller than the sum of its proper divisors (111759212).

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

83819388 is a wasteful number, since it uses less digits than its factorization.

83819388 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 6984956 (or 6984954 counting only the distinct ones).

The product of its digits is 331776, while the sum is 48.

The square root of 83819388 is about 9155.2928953693. The cubic root of 83819388 is about 437.6378023596.

The spelling of 83819388 in words is "eighty-three million, eight hundred nineteen thousand, three hundred eighty-eight".