8337421 has 2 divisors, whose sum is σ = 8337422. Its totient is φ = 8337420.

The previous prime is 8337383. The next prime is 8337451. The reversal of 8337421 is 1247338.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 8185321 + 152100 = 2861^2 + 390^2 .

It is a cyclic number.

It is not a de Polignac number, because 8337421 - 2¹⁹ = 7813133 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 8337421.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (8337451) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 4168710 + 4168711.

It is an arithmetic number, because the mean of its divisors is an integer number (4168711).

Almost surely, 2^8337421 is an apocalyptic number.

It is an amenable number.

8337421 is a deficient number, since it is larger than the sum of its proper divisors (1).

8337421 is an equidigital number, since it uses as much as digits as its factorization.

8337421 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 4032, while the sum is 28.

The square root of 8337421 is about 2887.4592637819. The cubic root of 8337421 is about 202.7732104529.

The spelling of 8337421 in words is "eight million, three hundred thirty-seven thousand, four hundred twenty-one".