83881388 has 12 divisors (see below), whose sum is σ = 148860432. Its totient is φ = 41349840.

The previous prime is 83881363. The next prime is 83881393. The reversal of 83881388 is 88318838.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 147395 + ... + 147962.

It is an arithmetic number, because the mean of its divisors is an integer number (12405036).

Almost surely, 2^83881388 is an apocalyptic number.

It is an amenable number.

83881388 is a deficient number, since it is larger than the sum of its proper divisors (64979044).

83881388 is a wasteful number, since it uses less digits than its factorization.

83881388 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 295432 (or 295430 counting only the distinct ones).

The product of its digits is 294912, while the sum is 47.

The square root of 83881388 is about 9158.6782889236. The cubic root of 83881388 is about 437.7456805687.

The spelling of 83881388 in words is "eighty-three million, eight hundred eighty-one thousand, three hundred eighty-eight".