898447745 has 16 divisors (see below), whose sum is σ = 1171355472. Its totient is φ = 657592320.

The previous prime is 898447717. The next prime is 898447747. The reversal of 898447745 is 547744898.

It can be written as a sum of positive squares in 8 ways, for example, as 350700529 + 547747216 = 18727^2 + 23404^2 .

It is not a de Polignac number, because 898447745 - 2¹⁰ = 898446721 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (898447747) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 53816 + ... + 68505.

It is an arithmetic number, because the mean of its divisors is an integer number (73209717).

Almost surely, 2^898447745 is an apocalyptic number.

It is an amenable number.

898447745 is a deficient number, since it is larger than the sum of its proper divisors (272907727).

898447745 is a wasteful number, since it uses less digits than its factorization.

898447745 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 122452.

The product of its digits is 9031680, while the sum is 56.

The square root of 898447745 is about 29974.1179186311. The cubic root of 898447745 is about 964.9339963984.

The spelling of 898447745 in words is "eight hundred ninety-eight million, four hundred forty-seven thousand, seven hundred forty-five".