84930215 has 16 divisors (see below), whose sum is σ = 108475200. Its totient is φ = 63613440.

The previous prime is 84930211. The next prime is 84930227. The reversal of 84930215 is 51203948.

It is not a de Polignac number, because 84930215 - 2² = 84930211 is a prime.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84930211) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 14405 + ... + 19425.

It is an arithmetic number, because the mean of its divisors is an integer number (6779700).

Almost surely, 2^84930215 is an apocalyptic number.

84930215 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

84930215 is a deficient number, since it is larger than the sum of its proper divisors (23544985).

84930215 is a wasteful number, since it uses less digits than its factorization.

84930215 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5242.

The product of its (nonzero) digits is 8640, while the sum is 32.

The square root of 84930215 is about 9215.7590571803. The cubic root of 84930215 is about 439.5626076994.

The spelling of 84930215 in words is "eighty-four million, nine hundred thirty thousand, two hundred fifteen".