4400021360 has 80 divisors (see below), whose sum is σ = 11706917376. Its totient is φ = 1506587904.

The previous prime is 4400021341. The next prime is 4400021383. The reversal of 4400021360 is 631200044.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (80).

It is a Harshad number since it is a multiple of its sum of digits (20).

It is a congruent number.

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, 456107 + ... + 465653.

Almost surely, 2^4400021360 is an apocalyptic number.

4400021360 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 4400021360, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (5853458688).

4400021360 is an abundant number, since it is smaller than the sum of its proper divisors (7306896016).

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

4400021360 is a wasteful number, since it uses less digits than its factorization.

4400021360 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 10390 (or 10384 counting only the distinct ones).

The product of its (nonzero) digits is 576, while the sum is 20.

The square root of 4400021360 is about 66332.6568139706. The cubic root of 4400021360 is about 1638.6451928186.

The spelling of 4400021360 in words is "four billion, four hundred million, twenty-one thousand, three hundred sixty".