44161397 has 6 divisors (see below), whose sum is σ = 51371478. Its totient is φ = 37852584.

The previous prime is 44161379. The next prime is 44161399. The reversal of 44161397 is 79316144.

44161397 = T₁₃₁₈ + T₁₃₁₉ + ... + T₁₃₆₆.

It can be written as a sum of positive squares in only one way, i.e., 24216241 + 19945156 = 4921^2 + 4466^2 .

It is not a de Polignac number, because 44161397 - 2¹⁶ = 44095861 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 (44161399) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 450578 + ... + 450675.

It is an arithmetic number, because the mean of its divisors is an integer number (8561913).

Almost surely, 2^44161397 is an apocalyptic number.

It is an amenable number.

44161397 is a deficient number, since it is larger than the sum of its proper divisors (7210081).

44161397 is an equidigital number, since it uses as much as digits as its factorization.

44161397 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 901267 (or 901260 counting only the distinct ones).

The product of its digits is 18144, while the sum is 35.

The square root of 44161397 is about 6645.4042014011. The cubic root of 44161397 is about 353.4659641119.

The spelling of 44161397 in words is "forty-four million, one hundred sixty-one thousand, three hundred ninety-seven".