44091440 has 20 divisors (see below), whose sum is σ = 102512784. Its totient is φ = 17636544.

The previous prime is 44091433. The next prime is 44091451. The reversal of 44091440 is 4419044.

It is a tau number, because it is divible by the number of its divisors (20).

It is a hoax number, since the sum of its digits (26) coincides with the sum of the digits of its distinct prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 275492 + ... + 275651.

Almost surely, 2^44091440 is an apocalyptic number.

44091440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44091440 is an abundant number, since it is smaller than the sum of its proper divisors (58421344).

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

44091440 is a wasteful number, since it uses less digits than its factorization.

44091440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 551156 (or 551150 counting only the distinct ones).

The product of its (nonzero) digits is 2304, while the sum is 26.

The square root of 44091440 is about 6640.1385527713. The cubic root of 44091440 is about 353.2792211741.

The spelling of 44091440 in words is "forty-four million, ninety-one thousand, four hundred forty".