84989631 has 16 divisors (see below), whose sum is σ = 117411840. Its totient is φ = 54627360.

The previous prime is 84989621. The next prime is 84989651. The reversal of 84989631 is 13698948.

It is not a de Polignac number, because 84989631 - 2⁷ = 84989503 is a prime.

It is a super-2 number, since 2×84989631² = 14446474755032322, which contains 22 as substring.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84989621) 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, 25690 + ... + 28808.

It is an arithmetic number, because the mean of its divisors is an integer number (7338240).

Almost surely, 2^84989631 is an apocalyptic number.

84989631 is a deficient number, since it is larger than the sum of its proper divisors (32422209).

84989631 is a wasteful number, since it uses less digits than its factorization.

84989631 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 3446.

The product of its digits is 373248, while the sum is 48.

The square root of 84989631 is about 9218.9821021629. The cubic root of 84989631 is about 439.6650877724.

The spelling of 84989631 in words is "eighty-four million, nine hundred eighty-nine thousand, six hundred thirty-one".