83994440 has 128 divisors (see below), whose sum is σ = 213408000. Its totient is φ = 29611008.

The previous prime is 83994439. The next prime is 83994451. The reversal of 83994440 is 4449938.

It is an unprimeable number.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 815429 + ... + 815531.

It is an arithmetic number, because the mean of its divisors is an integer number (1667250).

Almost surely, 2^83994440 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 83994440, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (106704000).

83994440 is an abundant number, since it is smaller than the sum of its proper divisors (129413560).

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

83994440 is a wasteful number, since it uses less digits than its factorization.

83994440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 199 (or 195 counting only the distinct ones).

The product of its (nonzero) digits is 124416, while the sum is 41.

The square root of 83994440 is about 9164.8480620248. The cubic root of 83994440 is about 437.9422510270.

The spelling of 83994440 in words is "eighty-three million, nine hundred ninety-four thousand, four hundred forty".