9898440 has 32 divisors (see below), whose sum is σ = 29695680. Its totient is φ = 2639552.

The previous prime is 9898433. The next prime is 9898451. The reversal of 9898440 is 448989.

It is a super-2 number, since 2×9898440² = 195958228867200, which contains 22 as substring.

It is a junction number, because it is equal to n+sod(n) for n = 9898392 and 9898401.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 41124 + ... + 41363.

It is an arithmetic number, because the mean of its divisors is an integer number (927990).

Almost surely, 2^9898440 is an apocalyptic number.

It is an amenable number.

9898440 is an abundant number, since it is smaller than the sum of its proper divisors (19797240).

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

9898440 is a wasteful number, since it uses less digits than its factorization.

9898440 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 82501 (or 82497 counting only the distinct ones).

The product of its (nonzero) digits is 82944, while the sum is 42.

The square root of 9898440 is about 3146.1786344707. The cubic root of 9898440 is about 214.7116379340.

The spelling of 9898440 in words is "nine million, eight hundred ninety-eight thousand, four hundred forty".