44866981 has 2 divisors, whose sum is σ = 44866982. Its totient is φ = 44866980.

The previous prime is 44866979. The next prime is 44867021. The reversal of 44866981 is 18966844.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 43678881 + 1188100 = 6609^2 + 1090^2 .

It is a cyclic number.

It is not a de Polignac number, because 44866981 - 2¹ = 44866979 is a prime.

It is a super-2 number, since 2×44866981² = 4026091968108722, which contains 22 as substring.

Together with 44866979, 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 (44866901) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 22433490 + 22433491.

It is an arithmetic number, because the mean of its divisors is an integer number (22433491).

Almost surely, 2^44866981 is an apocalyptic number.

It is an amenable number.

44866981 is a deficient number, since it is larger than the sum of its proper divisors (1).

44866981 is an equidigital number, since it uses as much as digits as its factorization.

44866981 is an evil number, because the sum of its binary digits is even.

The product of its digits is 331776, while the sum is 46.

The square root of 44866981 is about 6698.2819439017. The cubic root of 44866981 is about 355.3385146348.

The spelling of 44866981 in words is "forty-four million, eight hundred sixty-six thousand, nine hundred eighty-one".