44481309 has 16 divisors (see below), whose sum is σ = 60746304. Its totient is φ = 28944000.

The previous prime is 44481259. The next prime is 44481313. The reversal of 44481309 is 90318444.

It is a happy number.

It is not a de Polignac number, because 44481309 - 2⁸ = 44481053 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 44481309.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44481319) 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, 21114 + ... + 23124.

It is an arithmetic number, because the mean of its divisors is an integer number (3796644).

Almost surely, 2^44481309 is an apocalyptic number.

It is an amenable number.

44481309 is a deficient number, since it is larger than the sum of its proper divisors (16264995).

44481309 is a wasteful number, since it uses less digits than its factorization.

44481309 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2188.

The product of its (nonzero) digits is 13824, while the sum is 33.

The square root of 44481309 is about 6669.4309352448. The cubic root of 44481309 is about 354.3174320852.

The spelling of 44481309 in words is "forty-four million, four hundred eighty-one thousand, three hundred nine".