84638386 has 24 divisors (see below), whose sum is σ = 148653036. Its totient is φ = 36036000.

The previous prime is 84638383. The next prime is 84638387. The reversal of 84638386 is 68383648.

It can be written as a sum of positive squares in 2 ways, for example, as 80658361 + 3980025 = 8981^2 + 1995^2 .

It is not an unprimeable number, because it can be changed into a prime (84638383) by changing a digit.

It is a polite number, since it can be written in 11 ways as a sum of consecutive naturals, for example, 12636 + ... + 18136.

Almost surely, 2^84638386 is an apocalyptic number.

84638386 is a deficient number, since it is larger than the sum of its proper divisors (64014650).

84638386 is a wasteful number, since it uses less digits than its factorization.

84638386 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 5674 (or 5667 counting only the distinct ones).

The product of its digits is 663552, while the sum is 46.

The square root of 84638386 is about 9199.9122821905. The cubic root of 84638386 is about 439.0585690922.

The spelling of 84638386 in words is "eighty-four million, six hundred thirty-eight thousand, three hundred eighty-six".