80441940 has 96 divisors (see below), whose sum is σ = 236234880. Its totient is φ = 20425216.

The previous prime is 80441917. The next prime is 80441947. The reversal of 80441940 is 4914408.

It is a Harshad number since it is a multiple of its sum of digits (30).

It is a junction number, because it is equal to n+sod(n) for n = 80441898 and 80441907.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (80441947) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 144142 + ... + 144698.

It is an arithmetic number, because the mean of its divisors is an integer number (2460780).

Almost surely, 2^80441940 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 80441940, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (118117440).

80441940 is an abundant number, since it is smaller than the sum of its proper divisors (155792940).

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

80441940 is a wasteful number, since it uses less digits than its factorization.

80441940 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 681 (or 679 counting only the distinct ones).

The product of its (nonzero) digits is 4608, while the sum is 30.

The square root of 80441940 is about 8968.9430815453. The cubic root of 80441940 is about 431.6789238050.

The spelling of 80441940 in words is "eighty million, four hundred forty-one thousand, nine hundred forty".