84879631 has 8 divisors (see below), whose sum is σ = 89521280. Its totient is φ = 80255448.

The previous prime is 84879629. The next prime is 84879649. The reversal of 84879631 is 13697848.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 84879631 - 2¹ = 84879629 is a prime.

It is a super-2 number, since 2×84879631² = 14409103517392322, which contains 22 as substring.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84879601) by changing a digit.

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 7 ways as a sum of consecutive naturals, for example, 6310 + ... + 14476.

It is an arithmetic number, because the mean of its divisors is an integer number (11190160).

Almost surely, 2^84879631 is an apocalyptic number.

84879631 is a deficient number, since it is larger than the sum of its proper divisors (4641649).

84879631 is a wasteful number, since it uses less digits than its factorization.

84879631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8733.

The product of its digits is 290304, while the sum is 46.

The square root of 84879631 is about 9213.0142190273. The cubic root of 84879631 is about 439.4753232909.

The spelling of 84879631 in words is "eighty-four million, eight hundred seventy-nine thousand, six hundred thirty-one".