9998451 has 16 divisors (see below), whose sum is σ = 15129600. Its totient is φ = 6522984.

The previous prime is 9998447. The next prime is 9998459. The reversal of 9998451 is 1548999.

It is not a de Polignac number, because 9998451 - 2² = 9998447 is a prime.

It is a hoax number, since the sum of its digits (45) coincides with the sum of the digits of its distinct prime factors.

It is a junction number, because it is equal to n+sod(n) for n = 9998397 and 9998406.

It is not an unprimeable number, because it can be changed into a prime (9998459) 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, 2671 + ... + 5208.

It is an arithmetic number, because the mean of its divisors is an integer number (945600).

Almost surely, 2^9998451 is an apocalyptic number.

9998451 is a deficient number, since it is larger than the sum of its proper divisors (5131149).

9998451 is a wasteful number, since it uses less digits than its factorization.

9998451 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7935 (or 7929 counting only the distinct ones).

The product of its digits is 116640, while the sum is 45.

The square root of 9998451 is about 3162.0327322784. The cubic root of 9998451 is about 215.4323443643.

The spelling of 9998451 in words is "nine million, nine hundred ninety-eight thousand, four hundred fifty-one".