44991488 has 44 divisors (see below), whose sum is σ = 91746540. Its totient is φ = 22044672.

The previous prime is 44991421. The next prime is 44991491. The reversal of 44991488 is 88419944.

It can be written as a sum of positive squares in 2 ways, for example, as 29246464 + 15745024 = 5408^2 + 3968^2 .

It is a Smith number, since the sum of its digits (47) coincides with the sum of the digits of its prime factors.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 53858 + ... + 54686.

Almost surely, 2^44991488 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 44991488, and also a Zumkeller number, because its divisors can be partitioned in two sets with the same sum (45873270).

44991488 is an abundant number, since it is smaller than the sum of its proper divisors (46755052).

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

44991488 is an equidigital number, since it uses as much as digits as its factorization.

44991488 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 902 (or 884 counting only the distinct ones).

The product of its digits is 331776, while the sum is 47.

The square root of 44991488 is about 6707.5694554734. The cubic root of 44991488 is about 355.6669021638. Note that the first 3 decimals are identical.

The spelling of 44991488 in words is "forty-four million, nine hundred ninety-one thousand, four hundred eighty-eight".