44161421 has 2 divisors, whose sum is σ = 44161422. Its totient is φ = 44161420.

The previous prime is 44161409. The next prime is 44161433. The reversal of 44161421 is 12416144.

It is a happy number.

44161421 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a balanced prime because it is at equal distance from previous prime (44161409) and next prime (44161433).

It can be written as a sum of positive squares in only one way, i.e., 42432196 + 1729225 = 6514^2 + 1315^2 .

It is a cyclic number.

It is not a de Polignac number, because 44161421 - 2¹⁰ = 44160397 is a prime.

It is a super-2 number, since 2×44161421² = 3900462209478482, which contains 22 as substring.

It is equal to p_2670503 and since 44161421 and 2670503 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44161021) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22080710 + 22080711.

It is an arithmetic number, because the mean of its divisors is an integer number (22080711).

Almost surely, 2^44161421 is an apocalyptic number.

It is an amenable number.

44161421 is a deficient number, since it is larger than the sum of its proper divisors (1).

44161421 is an equidigital number, since it uses as much as digits as its factorization.

44161421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 768, while the sum is 23.

The square root of 44161421 is about 6645.4060071601. The cubic root of 44161421 is about 353.4660281435.

Adding to 44161421 its reverse (12416144), we get a palindrome (56577565).

The spelling of 44161421 in words is "forty-four million, one hundred sixty-one thousand, four hundred twenty-one".