84830479 has 2 divisors, whose sum is σ = 84830480. Its totient is φ = 84830478.

The previous prime is 84830467. The next prime is 84830483. The reversal of 84830479 is 97403848.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84830479 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (84833479) 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, 42415239 + 42415240.

It is an arithmetic number, because the mean of its divisors is an integer number (42415240).

Almost surely, 2^84830479 is an apocalyptic number.

84830479 is a deficient number, since it is larger than the sum of its proper divisors (1).

84830479 is an equidigital number, since it uses as much as digits as its factorization.

84830479 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 193536, while the sum is 43.

The square root of 84830479 is about 9210.3463018499. The cubic root of 84830479 is about 439.3904766214.

The spelling of 84830479 in words is "eighty-four million, eight hundred thirty thousand, four hundred seventy-nine".