84999379 has 2 divisors, whose sum is σ = 84999380. Its totient is φ = 84999378.

The previous prime is 84999373. The next prime is 84999419. The reversal of 84999379 is 97399948.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-84999379 is a prime.

It is not a weakly prime, because it can be changed into another prime (84999373) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 42499689 + 42499690.

It is an arithmetic number, because the mean of its divisors is an integer number (42499690).

Almost surely, 2^84999379 is an apocalyptic number.

84999379 is a deficient number, since it is larger than the sum of its proper divisors (1).

84999379 is an equidigital number, since it uses as much as digits as its factorization.

84999379 is an evil number, because the sum of its binary digits is even.

The product of its digits is 4408992, while the sum is 58.

The square root of 84999379 is about 9219.5107787778. The cubic root of 84999379 is about 439.6818964559.

The spelling of 84999379 in words is "eighty-four million, nine hundred ninety-nine thousand, three hundred seventy-nine".