44873821 has 2 divisors, whose sum is σ = 44873822. Its totient is φ = 44873820.

The previous prime is 44873819. The next prime is 44873827. The reversal of 44873821 is 12837844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 42068196 + 2805625 = 6486^2 + 1675^2 .

It is a cyclic number.

It is not a de Polignac number, because 44873821 - 2¹ = 44873819 is a prime.

It is a super-2 number, since 2×44873821² = 4027319622280082, which contains 22 as substring.

Together with 44873819, it forms a pair of twin primes.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44873827) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22436910 + 22436911.

It is an arithmetic number, because the mean of its divisors is an integer number (22436911).

Almost surely, 2^44873821 is an apocalyptic number.

It is an amenable number.

44873821 is a deficient number, since it is larger than the sum of its proper divisors (1).

44873821 is an equidigital number, since it uses as much as digits as its factorization.

44873821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 43008, while the sum is 37.

The square root of 44873821 is about 6698.7925031307. The cubic root of 44873821 is about 355.3565709120.

The spelling of 44873821 in words is "forty-four million, eight hundred seventy-three thousand, eight hundred twenty-one".