83889450 has 72 divisors (see below), whose sum is σ = 226532748. Its totient is φ = 22256640.

The previous prime is 83889437. The next prime is 83889467. The reversal of 83889450 is 5498838.

It can be written as a sum of positive squares in 6 ways, for example, as 11350161 + 72539289 = 3369^2 + 8517^2 .

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a Curzon number.

It is a junction number, because it is equal to n+sod(n) for n = 83889396 and 83889405.

It is an unprimeable number.

It is a polite number, since it can be written in 35 ways as a sum of consecutive naturals, for example, 124314 + ... + 124986.

Almost surely, 2^83889450 is an apocalyptic number.

It is a practical number, because each smaller number is the sum of distinct divisors of 83889450, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (113266374).

83889450 is an abundant number, since it is smaller than the sum of its proper divisors (142643298).

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

83889450 is a wasteful number, since it uses less digits than its factorization.

83889450 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 968 (or 960 counting only the distinct ones).

The product of its (nonzero) digits is 276480, while the sum is 45.

The square root of 83889450 is about 9159.1184073578. The cubic root of 83889450 is about 437.7597043099.

The spelling of 83889450 in words is "eighty-three million, eight hundred eighty-nine thousand, four hundred fifty".