8421298 has 4 divisors (see below), whose sum is σ = 12631950. Its totient is φ = 4210648.

The previous prime is 8421251. The next prime is 8421403. The reversal of 8421298 is 8921248.

8421298 is digitally balanced in base 2, because in such base it contains all the possibile digits an equal number of times.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 7935489 + 485809 = 2817^2 + 697^2 .

It is an unprimeable number.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2105323 + ... + 2105326.

Almost surely, 2^8421298 is an apocalyptic number.

8421298 is a deficient number, since it is larger than the sum of its proper divisors (4210652).

8421298 is a wasteful number, since it uses less digits than its factorization.

8421298 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 4210651.

The product of its digits is 9216, while the sum is 34.

The square root of 8421298 is about 2901.9472772606. The cubic root of 8421298 is about 203.4509296170.

The spelling of 8421298 in words is "eight million, four hundred twenty-one thousand, two hundred ninety-eight".