84427015 has 12 divisors (see below), whose sum is σ = 107624376. Its totient is φ = 63567488.

The previous prime is 84427003. The next prime is 84427067. The reversal of 84427015 is 51072448.

It is not a de Polignac number, because 84427015 - 2⁵ = 84426983 is a prime.

It is a Duffinian number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 27769 + ... + 30658.

It is an arithmetic number, because the mean of its divisors is an integer number (8968698).

Almost surely, 2^84427015 is an apocalyptic number.

84427015 is a gapful number since it is divisible by the number (85) formed by its first and last digit.

84427015 is a deficient number, since it is larger than the sum of its proper divisors (23197361).

84427015 is a wasteful number, since it uses less digits than its factorization.

84427015 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 58466 (or 58449 counting only the distinct ones).

The product of its (nonzero) digits is 8960, while the sum is 31.

The square root of 84427015 is about 9188.4174371869. The cubic root of 84427015 is about 438.6927712739.

The spelling of 84427015 in words is "eighty-four million, four hundred twenty-seven thousand, fifteen".