440299980 has 72 divisors (see below), whose sum is σ = 1347458112. Its totient is φ = 116368896.

The previous prime is 440299969. The next prime is 440299997. The reversal of 440299980 is 89992044.

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

It is an unprimeable number.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 9517 + ... + 31163.

It is an arithmetic number, because the mean of its divisors is an integer number (18714696).

Almost surely, 2^440299980 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 440299980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (673729056).

440299980 is an abundant number, since it is smaller than the sum of its proper divisors (907158132).

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

440299980 is a wasteful number, since it uses less digits than its factorization.

440299980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21775 (or 21770 counting only the distinct ones).

The product of its (nonzero) digits is 186624, while the sum is 45.

The square root of 440299980 is about 20983.3262377536. The cubic root of 440299980 is about 760.7633028371.

The spelling of 440299980 in words is "four hundred forty million, two hundred ninety-nine thousand, nine hundred eighty".