44894940821 has 2 divisors, whose sum is σ = 44894940822. Its totient is φ = 44894940820.

The previous prime is 44894940791. The next prime is 44894940877. The reversal of 44894940821 is 12804949844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 44819007025 + 75933796 = 211705^2 + 8714^2 .

It is a cyclic number.

It is not a de Polignac number, because 44894940821 - 2²² = 44890746517 is a prime.

It is a super-3 number, since 3×44894940821³ (a number of 33 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (44894940121) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22447470410 + 22447470411.

It is an arithmetic number, because the mean of its divisors is an integer number (22447470411).

Almost surely, 2^44894940821 is an apocalyptic number.

It is an amenable number.

44894940821 is a deficient number, since it is larger than the sum of its proper divisors (1).

44894940821 is an equidigital number, since it uses as much as digits as its factorization.

44894940821 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2654208, while the sum is 53.

The spelling of 44894940821 in words is "forty-four billion, eight hundred ninety-four million, nine hundred forty thousand, eight hundred twenty-one".