44161389 has 8 divisors (see below), whose sum is σ = 65424320. Its totient is φ = 29440908.

The previous prime is 44161379. The next prime is 44161399. The reversal of 44161389 is 98316144.

It is an interprime number because it is at equal distance from previous prime (44161379) and next prime (44161399).

It is not a de Polignac number, because 44161389 - 2¹² = 44157293 is a prime.

It is a Duffinian number.

It is a Curzon number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44161319) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 817777 + ... + 817830.

It is an arithmetic number, because the mean of its divisors is an integer number (8178040).

Almost surely, 2^44161389 is an apocalyptic number.

It is an amenable number.

44161389 is a deficient number, since it is larger than the sum of its proper divisors (21262931).

44161389 is a wasteful number, since it uses less digits than its factorization.

44161389 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 1635616 (or 1635610 counting only the distinct ones).

The product of its digits is 20736, while the sum is 36.

The square root of 44161389 is about 6645.4035994814. The cubic root of 44161389 is about 353.4659427680.

The spelling of 44161389 in words is "forty-four million, one hundred sixty-one thousand, three hundred eighty-nine".