4405243920 has 320 divisors, whose sum is σ = 17169186816. Its totient is φ = 907683840.

The previous prime is 4405243907. The next prime is 4405243957. The reversal of 4405243920 is 293425044.

It is a Harshad number since it is a multiple of its sum of digits (33).

It is an unprimeable number.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 2346022 + ... + 2347898.

Almost surely, 2^4405243920 is an apocalyptic number.

4405243920 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 4405243920, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (8584593408).

4405243920 is an abundant number, since it is smaller than the sum of its proper divisors (12763942896).

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

4405243920 is a wasteful number, since it uses less digits than its factorization.

4405243920 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2038 (or 2032 counting only the distinct ones).

The product of its (nonzero) digits is 34560, while the sum is 33.

The square root of 4405243920 is about 66372.0115711434. The cubic root of 4405243920 is about 1639.2932608207.

Adding to 4405243920 its reverse (293425044), we get a palindrome (4698668964).

It can be divided in two parts, 440524 and 3920, that added together give a palindrome (444444).

The spelling of 4405243920 in words is "four billion, four hundred five million, two hundred forty-three thousand, nine hundred twenty".