44445709 has 16 divisors (see below), whose sum is σ = 55595520. Its totient is φ = 34518960.

The previous prime is 44445707. The next prime is 44445743. The reversal of 44445709 is 90754444.

It is a happy number.

It is not a de Polignac number, because 44445709 - 2¹ = 44445707 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44445707) 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, 28422 + ... + 29944.

It is an arithmetic number, because the mean of its divisors is an integer number (3474720).

Almost surely, 2^44445709 is an apocalyptic number.

It is an amenable number.

44445709 is a deficient number, since it is larger than the sum of its proper divisors (11149811).

44445709 is a wasteful number, since it uses less digits than its factorization.

44445709 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1920.

The product of its (nonzero) digits is 80640, while the sum is 37.

The square root of 44445709 is about 6666.7615076587. The cubic root of 44445709 is about 354.2228825060. Note that the first 3 decimals are identical.

It can be divided in two parts, 44445 and 709, that added together give a palindrome (45154).

The spelling of 44445709 in words is "forty-four million, four hundred forty-five thousand, seven hundred nine".