44569980 has 192 divisors, whose sum is σ = 170849280. Its totient is φ = 9393408.

The previous prime is 44569969. The next prime is 44569981. The reversal of 44569980 is 8996544.

It is a happy number.

44569980 is a `hidden beast` number, since 4 + 4 + 569 + 9 + 80 = 666.

It is a Smith number, since the sum of its digits (45) coincides with the sum of the digits of its prime factors.

It is a Harshad number since it is a multiple of its sum of digits (45).

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (44569981) by changing a digit.

It is a polite number, since it can be written in 63 ways as a sum of consecutive naturals, for example, 48687 + ... + 49593.

It is an arithmetic number, because the mean of its divisors is an integer number (889840).

Almost surely, 2^44569980 is an apocalyptic number.

It is an amenable number.

It is a practical number, because each smaller number is the sum of distinct divisors of 44569980, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (85424640).

44569980 is an abundant number, since it is smaller than the sum of its proper divisors (126279300).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

44569980 is a wasteful number, since it uses less digits than its factorization.

44569980 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 945 (or 937 counting only the distinct ones).

The product of its (nonzero) digits is 311040, while the sum is 45.

The square root of 44569980 is about 6676.0751943039. The cubic root of 44569980 is about 354.5527131381.

The spelling of 44569980 in words is "forty-four million, five hundred sixty-nine thousand, nine hundred eighty".