84480915 has 32 divisors (see below), whose sum is σ = 140834880. Its totient is φ = 43190784.

The previous prime is 84480901. The next prime is 84480919. The reversal of 84480915 is 51908448.

It is not a de Polignac number, because 84480915 - 2⁴ = 84480899 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84480919) 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 31 ways as a sum of consecutive naturals, for example, 67677 + ... + 68913.

It is an arithmetic number, because the mean of its divisors is an integer number (4401090).

Almost surely, 2^84480915 is an apocalyptic number.

84480915 is a deficient number, since it is larger than the sum of its proper divisors (56353965).

84480915 is a wasteful number, since it uses less digits than its factorization.

84480915 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 1431.

The product of its (nonzero) digits is 46080, while the sum is 39.

The square root of 84480915 is about 9191.3500096558. The cubic root of 84480915 is about 438.7861083423.

The spelling of 84480915 in words is "eighty-four million, four hundred eighty thousand, nine hundred fifteen".