83966988 has 72 divisors (see below), whose sum is σ = 231745584. Its totient is φ = 23587200.

The previous prime is 83966969. The next prime is 83967007. The reversal of 83966988 is 88966938.

It is an interprime number because it is at equal distance from previous prime (83966969) and next prime (83967007).

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, 34698 + ... + 37038.

Almost surely, 2^83966988 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83966988, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (115872792).

83966988 is an abundant number, since it is smaller than the sum of its proper divisors (147778596).

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

83966988 is a wasteful number, since it uses less digits than its factorization.

83966988 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2423 (or 2414 counting only the distinct ones).

The product of its digits is 4478976, while the sum is 57.

The square root of 83966988 is about 9163.3502606852. The cubic root of 83966988 is about 437.8945347707.

The spelling of 83966988 in words is "eighty-three million, nine hundred sixty-six thousand, nine hundred eighty-eight".