44421457 has 2 divisors, whose sum is σ = 44421458. Its totient is φ = 44421456.

The previous prime is 44421407. The next prime is 44421511. The reversal of 44421457 is 75412444.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 40564161 + 3857296 = 6369^2 + 1964^2 .

It is a cyclic number.

It is not a de Polignac number, because 44421457 - 2²³ = 36032849 is a prime.

It is not a weakly prime, because it can be changed into another prime (44421407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22210728 + 22210729.

It is an arithmetic number, because the mean of its divisors is an integer number (22210729).

Almost surely, 2^44421457 is an apocalyptic number.

It is an amenable number.

44421457 is a deficient number, since it is larger than the sum of its proper divisors (1).

44421457 is an equidigital number, since it uses as much as digits as its factorization.

44421457 is an evil number, because the sum of its binary digits is even.

The product of its digits is 17920, while the sum is 31.

The square root of 44421457 is about 6664.9423853474. The cubic root of 44421457 is about 354.1584430170.

The spelling of 44421457 in words is "forty-four million, four hundred twenty-one thousand, four hundred fifty-seven".