844890479 has 2 divisors, whose sum is σ = 844890480. Its totient is φ = 844890478.

The previous prime is 844890469. The next prime is 844890547. The reversal of 844890479 is 974098448.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 844890479 - 2⁸ = 844890223 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 844890479.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (844890469) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 422445239 + 422445240.

It is an arithmetic number, because the mean of its divisors is an integer number (422445240).

Almost surely, 2^844890479 is an apocalyptic number.

844890479 is a deficient number, since it is larger than the sum of its proper divisors (1).

844890479 is an equidigital number, since it uses as much as digits as its factorization.

844890479 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 2322432, while the sum is 53.

The square root of 844890479 is about 29066.9998279836. Note that the first 3 decimals coincide. The cubic root of 844890479 is about 945.3663478862.

The spelling of 844890479 in words is "eight hundred forty-four million, eight hundred ninety thousand, four hundred seventy-nine".