44487440 has 20 divisors (see below), whose sum is σ = 103433484. Its totient is φ = 17794944.

The previous prime is 44487437. The next prime is 44487467. The reversal of 44487440 is 4478444.

It is a happy number.

It can be written as a sum of positive squares in 2 ways, for example, as 29986576 + 14500864 = 5476^2 + 3808^2 .

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 (35) coincides with the sum of the digits of its distinct prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 44487440.

It is an unprimeable number.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 277967 + ... + 278126.

Almost surely, 2^44487440 is an apocalyptic number.

44487440 is a gapful number since it is divisible by the number (40) formed by its first and last digit.

It is an amenable number.

44487440 is an abundant number, since it is smaller than the sum of its proper divisors (58946044).

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

44487440 is a wasteful number, since it uses less digits than its factorization.

44487440 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 556106 (or 556100 counting only the distinct ones).

The product of its (nonzero) digits is 57344, while the sum is 35.

The square root of 44487440 is about 6669.8905538247. The cubic root of 44487440 is about 354.3337102361. Note that the first 3 decimals are identical.

The spelling of 44487440 in words is "forty-four million, four hundred eighty-seven thousand, four hundred forty".