84631393 has 24 divisors (see below), whose sum is σ = 107140544. Its totient is φ = 65435040.

The previous prime is 84631381. The next prime is 84631487. The reversal of 84631393 is 39313648.

It is not a de Polignac number, because 84631393 - 2²¹ = 82534241 is a prime.

It is a super-2 number, since 2×84631393² = 14324945362240898, which contains 22 as substring.

It is not an unprimeable number, because it can be changed into a prime (84631343) by changing a digit.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 137755 + ... + 138367.

Almost surely, 2^84631393 is an apocalyptic number.

It is an amenable number.

84631393 is a deficient number, since it is larger than the sum of its proper divisors (22509151).

84631393 is a wasteful number, since it uses less digits than its factorization.

84631393 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 805 (or 794 counting only the distinct ones).

The product of its digits is 46656, while the sum is 37.

The square root of 84631393 is about 9199.5322163684. The cubic root of 84631393 is about 439.0464767809.

The spelling of 84631393 in words is "eighty-four million, six hundred thirty-one thousand, three hundred ninety-three".