4405026640 has 80 divisors (see below), whose sum is σ = 11977054848. Its totient is φ = 1475163648.

The previous prime is 4405026629. The next prime is 4405026643. The reversal of 4405026640 is 466205044.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (4405026643) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 67387 + ... + 115546.

Almost surely, 2^4405026640 is an apocalyptic number.

4405026640 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

4405026640 is an abundant number, since it is smaller than the sum of its proper divisors (7572028208).

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

4405026640 is a wasteful number, since it uses less digits than its factorization.

4405026640 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 182996 (or 182990 counting only the distinct ones).

The product of its (nonzero) digits is 23040, while the sum is 31.

The square root of 4405026640 is about 66370.3747164350. The cubic root of 4405026640 is about 1639.2663087380.

The spelling of 4405026640 in words is "four billion, four hundred five million, twenty-six thousand, six hundred forty".