84248979 has 16 divisors (see below), whose sum is σ = 116250624. Its totient is φ = 54216000.

The previous prime is 84248951. The next prime is 84248981. The reversal of 84248979 is 97984248.

It is not a de Polignac number, because 84248979 - 2⁵ = 84248947 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84248909) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 45879 + ... + 47679.

It is an arithmetic number, because the mean of its divisors is an integer number (7265664).

Almost surely, 2^84248979 is an apocalyptic number.

84248979 is a deficient number, since it is larger than the sum of its proper divisors (32001645).

84248979 is a wasteful number, since it uses less digits than its factorization.

84248979 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2338.

The product of its digits is 1161216, while the sum is 51.

The square root of 84248979 is about 9178.7242577604. The cubic root of 84248979 is about 438.3841888817.

The spelling of 84248979 in words is "eighty-four million, two hundred forty-eight thousand, nine hundred seventy-nine".