84870115 has 24 divisors (see below), whose sum is σ = 116183088. Its totient is φ = 59019840.

The previous prime is 84870101. The next prime is 84870127. The reversal of 84870115 is 51107848.

It is not a de Polignac number, because 84870115 - 2⁵ = 84870083 is a prime.

It is a super-2 number, since 2×84870115² = 14405872840226450, which contains 22 as substring.

It is a Duffinian number.

It is an unprimeable number.

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 in 23 ways as a sum of consecutive naturals, for example, 27637 + ... + 30553.

It is an arithmetic number, because the mean of its divisors is an integer number (4840962).

Almost surely, 2^84870115 is an apocalyptic number.

84870115 is a deficient number, since it is larger than the sum of its proper divisors (31312973).

84870115 is a wasteful number, since it uses less digits than its factorization.

84870115 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2979 (or 2956 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 34.

The square root of 84870115 is about 9212.4977611938. The cubic root of 84870115 is about 439.4588992348.

The spelling of 84870115 in words is "eighty-four million, eight hundred seventy thousand, one hundred fifteen".