7872443 has 2 divisors, whose sum is σ = 7872444. Its totient is φ = 7872442.

The previous prime is 7872439. The next prime is 7872521. The reversal of 7872443 is 3442787.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 7872443 - 2² = 7872439 is a prime.

It is a Sophie Germain prime.

It is a d-powerful number, because it can be written as 7 + 8⁷ + 7⁸ + 2¹³ + 4⁵ + 4⁵ + 3⁵ .

It is not a weakly prime, because it can be changed into another prime (7872413) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 3936221 + 3936222.

It is an arithmetic number, because the mean of its divisors is an integer number (3936222).

Almost surely, 2^7872443 is an apocalyptic number.

7872443 is a deficient number, since it is larger than the sum of its proper divisors (1).

7872443 is an equidigital number, since it uses as much as digits as its factorization.

7872443 is an odious number, because the sum of its binary digits is odd.

The product of its digits is 37632, while the sum is 35.

The square root of 7872443 is about 2805.7874117616. The cubic root of 7872443 is about 198.9313248378.

The spelling of 7872443 in words is "seven million, eight hundred seventy-two thousand, four hundred forty-three".