4405520 has 40 divisors (see below), whose sum is σ = 11707584. Its totient is φ = 1510272.

The previous prime is 4405517. The next prime is 4405523. The reversal of 4405520 is 255044.

It is a happy number.

It is an interprime number because it is at equal distance from previous prime (4405517) and next prime (4405523).

It is a tau number, because it is divible by the number of its divisors (40).

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

It is a nialpdrome in base 13.

It is a zygodrome in base 13.

It is a junction number, because it is equal to n+sod(n) for n = 4405492 and 4405501.

It is not an unprimeable number, because it can be changed into a prime (4405523) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3374 + ... + 4493.

Almost surely, 2^4405520 is an apocalyptic number.

4405520 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4405520 is an abundant number, since it is smaller than the sum of its proper divisors (7302064).

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

4405520 is a wasteful number, since it uses less digits than its factorization.

4405520 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7887 (or 7881 counting only the distinct ones).

The product of its (nonzero) digits is 800, while the sum is 20.

The square root of 4405520 is about 2098.9330622962. The cubic root of 4405520 is about 163.9327505359.

The spelling of 4405520 in words is "four million, four hundred five thousand, five hundred twenty".