84639164 has 6 divisors (see below), whose sum is σ = 148118544. Its totient is φ = 42319580.

The previous prime is 84639143. The next prime is 84639169. The reversal of 84639164 is 46193648.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (84639169) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 10579892 + ... + 10579899.

It is an arithmetic number, because the mean of its divisors is an integer number (24686424).

Almost surely, 2^84639164 is an apocalyptic number.

It is an amenable number.

84639164 is a deficient number, since it is larger than the sum of its proper divisors (63479380).

84639164 is a wasteful number, since it uses less digits than its factorization.

84639164 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 21159795 (or 21159793 counting only the distinct ones).

The product of its digits is 124416, while the sum is 41.

The square root of 84639164 is about 9199.9545651052. The cubic root of 84639164 is about 439.0599143704.

The spelling of 84639164 in words is "eighty-four million, six hundred thirty-nine thousand, one hundred sixty-four".