84519940 has 48 divisors (see below), whose sum is σ = 189560448. Its totient is φ = 31578624.

The previous prime is 84519913. The next prime is 84519977. The reversal of 84519940 is 4991548.

It is a junction number, because it is equal to n+sod(n) for n = 84519893 and 84519902.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 17644 + ... + 21916.

It is an arithmetic number, because the mean of its divisors is an integer number (3949176).

Almost surely, 2^84519940 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 84519940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (94780224).

84519940 is an abundant number, since it is smaller than the sum of its proper divisors (105040508).

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

84519940 is a wasteful number, since it uses less digits than its factorization.

84519940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4348 (or 4346 counting only the distinct ones).

The product of its (nonzero) digits is 51840, while the sum is 40.

The square root of 84519940 is about 9193.4726844648. The cubic root of 84519940 is about 438.8536620293.

The spelling of 84519940 in words is "eighty-four million, five hundred nineteen thousand, nine hundred forty".