4445005440 has 64 divisors (see below), whose sum is σ = 14168460960. Its totient is φ = 1185334272.

The previous prime is 4445005391. The next prime is 4445005441. The reversal of 4445005440 is 445005444.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (64).

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 = 4445005398 and 4445005407.

It is not an unprimeable number, because it can be changed into a prime (4445005441) 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, 1155634 + ... + 1159473.

Almost surely, 2^4445005440 is an apocalyptic number.

4445005440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4445005440 is an abundant number, since it is smaller than the sum of its proper divisors (9723455520).

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

4445005440 is a wasteful number, since it uses less digits than its factorization.

4445005440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2315129 (or 2315117 counting only the distinct ones).

The product of its (nonzero) digits is 25600, while the sum is 30.

The square root of 4445005440 is about 66670.8740005709. The cubic root of 4445005440 is about 1644.2105566772.

The spelling of 4445005440 in words is "four billion, four hundred forty-five million, five thousand, four hundred forty".