44145709 has 2 divisors, whose sum is σ = 44145710. Its totient is φ = 44145708.

The previous prime is 44145707. The next prime is 44145713. The reversal of 44145709 is 90754144.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38167684 + 5978025 = 6178^2 + 2445^2 .

It is a cyclic number.

It is not a de Polignac number, because 44145709 - 2¹ = 44145707 is a prime.

It is a super-2 number, since 2×44145709² = 3897687246225362, which contains 22 as substring.

Together with 44145707, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44145707) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22072854 + 22072855.

It is an arithmetic number, because the mean of its divisors is an integer number (22072855).

Almost surely, 2^44145709 is an apocalyptic number.

It is an amenable number.

44145709 is a deficient number, since it is larger than the sum of its proper divisors (1).

44145709 is an equidigital number, since it uses as much as digits as its factorization.

44145709 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 20160, while the sum is 34.

The square root of 44145709 is about 6644.2237319344. The cubic root of 44145709 is about 353.4241037906.

The spelling of 44145709 in words is "forty-four million, one hundred forty-five thousand, seven hundred nine".