44144381 has 2 divisors, whose sum is σ = 44144382. Its totient is φ = 44144380.

The previous prime is 44144371. The next prime is 44144407. The reversal of 44144381 is 18344144.

It is a happy number.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 38812900 + 5331481 = 6230^2 + 2309^2 .

It is a cyclic number.

It is not a de Polignac number, because 44144381 - 2¹⁰ = 44143357 is a prime.

It is a super-2 number, since 2×44144381² = 3897452747746322, which contains 22 as substring.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44144371) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22072190 + 22072191.

It is an arithmetic number, because the mean of its divisors is an integer number (22072191).

Almost surely, 2^44144381 is an apocalyptic number.

It is an amenable number.

44144381 is a deficient number, since it is larger than the sum of its proper divisors (1).

44144381 is an equidigital number, since it uses as much as digits as its factorization.

44144381 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 6144, while the sum is 29.

The square root of 44144381 is about 6644.1237947528. The cubic root of 44144381 is about 353.4205598303.

The spelling of 44144381 in words is "forty-four million, one hundred forty-four thousand, three hundred eighty-one".