84980631 has 4 divisors (see below), whose sum is σ = 113307512. Its totient is φ = 56653752.

The previous prime is 84980611. The next prime is 84980639. The reversal of 84980631 is 13608948.

It is a semiprime because it is the product of two primes.

It is not a de Polignac number, because 84980631 - 2¹⁷ = 84849559 is a prime.

It is a super-2 number, since 2×84980631² = 14443415290316322, which contains 22 as substring.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 84980631.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84980639) 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 3 ways as a sum of consecutive naturals, for example, 14163436 + ... + 14163441.

It is an arithmetic number, because the mean of its divisors is an integer number (28326878).

Almost surely, 2^84980631 is an apocalyptic number.

84980631 is a deficient number, since it is larger than the sum of its proper divisors (28326881).

84980631 is a wasteful number, since it uses less digits than its factorization.

84980631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 28326880.

The product of its (nonzero) digits is 41472, while the sum is 39.

The square root of 84980631 is about 9218.4939659361. The cubic root of 84980631 is about 439.6495677400.

The spelling of 84980631 in words is "eighty-four million, nine hundred eighty thousand, six hundred thirty-one".