44849821 has 2 divisors, whose sum is σ = 44849822. Its totient is φ = 44849820.

The previous prime is 44849807. The next prime is 44849837. The reversal of 44849821 is 12894844.

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., 27092025 + 17757796 = 5205^2 + 4214^2 .

It is a cyclic number.

It is not a de Polignac number, because 44849821 - 2⁵ = 44849789 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44849881) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22424910 + 22424911.

It is an arithmetic number, because the mean of its divisors is an integer number (22424911).

Almost surely, 2^44849821 is an apocalyptic number.

It is an amenable number.

44849821 is a deficient number, since it is larger than the sum of its proper divisors (1).

44849821 is an equidigital number, since it uses as much as digits as its factorization.

44849821 is an evil number, because the sum of its binary digits is even.

The product of its digits is 73728, while the sum is 40.

The square root of 44849821 is about 6697.0008959235. Note that the first 3 decimals coincide. The cubic root of 44849821 is about 355.2932074749.

The spelling of 44849821 in words is "forty-four million, eight hundred forty-nine thousand, eight hundred twenty-one".