84291980 has 48 divisors (see below), whose sum is σ = 192780000. Its totient is φ = 30836736.

The previous prime is 84291979. The next prime is 84292003. The reversal of 84291980 is 8919248.

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, 7196 + ... + 14844.

It is an arithmetic number, because the mean of its divisors is an integer number (4016250).

Almost surely, 2^84291980 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 84291980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (96390000).

84291980 is an abundant number, since it is smaller than the sum of its proper divisors (108488020).

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

84291980 is a wasteful number, since it uses less digits than its factorization.

84291980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7706 (or 7704 counting only the distinct ones).

The product of its (nonzero) digits is 41472, while the sum is 41.

The square root of 84291980 is about 9181.0663868638. The cubic root of 84291980 is about 438.4587605162.

The spelling of 84291980 in words is "eighty-four million, two hundred ninety-one thousand, nine hundred eighty".