44480981 has 4 divisors (see below), whose sum is σ = 44874732. Its totient is φ = 44087232.

The previous prime is 44480977. The next prime is 44480987. The reversal of 44480981 is 18908444.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in 2 ways, for example, as 16072081 + 28408900 = 4009^2 + 5330^2 .

It is a cyclic number.

It is not a de Polignac number, because 44480981 - 2² = 44480977 is a prime.

It is a super-2 number, since 2×44480981² = 3957115341444722, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44480987) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 196706 + ... + 196931.

It is an arithmetic number, because the mean of its divisors is an integer number (11218683).

Almost surely, 2^44480981 is an apocalyptic number.

It is an amenable number.

44480981 is a deficient number, since it is larger than the sum of its proper divisors (393751).

44480981 is a wasteful number, since it uses less digits than its factorization.

44480981 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 393750.

The product of its (nonzero) digits is 36864, while the sum is 38.

The square root of 44480981 is about 6669.4063453954. The cubic root of 44480981 is about 354.3165611846.

The spelling of 44480981 in words is "forty-four million, four hundred eighty thousand, nine hundred eighty-one".