84452815 has 16 divisors (see below), whose sum is σ = 106934400. Its totient is φ = 63852192.

The previous prime is 84452807. The next prime is 84452861. The reversal of 84452815 is 51825448.

It is a cyclic number.

It is not a de Polignac number, because 84452815 - 2³ = 84452807 is a prime.

It is a super-2 number, since 2×84452815² = 14264555922848450, which contains 22 as substring.

It is a congruent 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 15 ways as a sum of consecutive naturals, for example, 52696 + ... + 54274.

It is an arithmetic number, because the mean of its divisors is an integer number (6683400).

Almost surely, 2^84452815 is an apocalyptic number.

84452815 is a deficient number, since it is larger than the sum of its proper divisors (22481585).

84452815 is a wasteful number, since it uses less digits than its factorization.

84452815 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 2166.

The product of its digits is 51200, while the sum is 37.

The square root of 84452815 is about 9189.8212713850. The cubic root of 84452815 is about 438.7374533415.

The spelling of 84452815 in words is "eighty-four million, four hundred fifty-two thousand, eight hundred fifteen".