898469721 has 24 divisors (see below), whose sum is σ = 1315496000. Its totient is φ = 590854176.

The previous prime is 898469711. The next prime is 898469731. The reversal of 898469721 is 127964898.

It is an interprime number because it is at equal distance from previous prime (898469711) and next prime (898469731).

It is not a de Polignac number, because 898469721 - 2¹⁵ = 898436953 is a prime.

It is a Duffinian number.

It is not an unprimeable number, because it can be changed into a prime (898469711) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 255030 + ... + 258528.

Almost surely, 2^898469721 is an apocalyptic number.

It is an amenable number.

898469721 is a deficient number, since it is larger than the sum of its proper divisors (417026279).

898469721 is a wasteful number, since it uses less digits than its factorization.

898469721 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3885 (or 3882 counting only the distinct ones).

The product of its digits is 1741824, while the sum is 54.

The square root of 898469721 is about 29974.4844993204. The cubic root of 898469721 is about 964.9418637514.

The spelling of 898469721 in words is "eight hundred ninety-eight million, four hundred sixty-nine thousand, seven hundred twenty-one".