445749089 has 6 divisors (see below), whose sum is σ = 456887910. Its totient is φ = 434875520.

The previous prime is 445749077. The next prime is 445749107. The reversal of 445749089 is 980947544.

It can be written as a sum of positive squares in 3 ways, for example, as 5798464 + 439950625 = 2408^2 + 20975^2 .

It is not a de Polignac number, because 445749089 - 2⁸ = 445748833 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (445749019) by changing a digit.

It is a polite number, since it can be written in 5 ways as a sum of consecutive naturals, for example, 130904 + ... + 134265.

It is an arithmetic number, because the mean of its divisors is an integer number (76147985).

Almost surely, 2^445749089 is an apocalyptic number.

It is an amenable number.

445749089 is a deficient number, since it is larger than the sum of its proper divisors (11138821).

445749089 is an equidigital number, since it uses as much as digits as its factorization.

445749089 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 265251 (or 265210 counting only the distinct ones).

The product of its (nonzero) digits is 1451520, while the sum is 50.

The square root of 445749089 is about 21112.7707561087. The cubic root of 445749089 is about 763.8888215045. Note that the first 4 decimals are identical.

The spelling of 445749089 in words is "four hundred forty-five million, seven hundred forty-nine thousand, eighty-nine".