84279387 has 16 divisors (see below), whose sum is σ = 119493792. Its totient is φ = 52654080.

The previous prime is 84279379. The next prime is 84279397. The reversal of 84279387 is 78397248.

It is not a de Polignac number, because 84279387 - 2³ = 84279379 is a prime.

It is not an unprimeable number, because it can be changed into a prime (84279397) by changing a digit.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 8863 + ... + 15719.

It is an arithmetic number, because the mean of its divisors is an integer number (7468362).

Almost surely, 2^84279387 is an apocalyptic number.

84279387 is a deficient number, since it is larger than the sum of its proper divisors (35214405).

84279387 is a wasteful number, since it uses less digits than its factorization.

84279387 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 7118.

The product of its digits is 677376, while the sum is 48.

The square root of 84279387 is about 9180.3805476679. The cubic root of 84279387 is about 438.4369245671.

It can be divided in two parts, 84279 and 387, that added together give a triangular number (84666 = T₄₁₁).

The spelling of 84279387 in words is "eighty-four million, two hundred seventy-nine thousand, three hundred eighty-seven".