84649172 has 12 divisors (see below), whose sum is σ = 148231860. Its totient is φ = 42297216.

The previous prime is 84649153. The next prime is 84649309. The reversal of 84649172 is 27194648.

It can be written as a sum of positive squares in 2 ways, for example, as 35593156 + 49056016 = 5966^2 + 7004^2 .

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1154 + ... + 13062.

It is an arithmetic number, because the mean of its divisors is an integer number (12352655).

Almost surely, 2^84649172 is an apocalyptic number.

It is an amenable number.

84649172 is a deficient number, since it is larger than the sum of its proper divisors (63582688).

84649172 is a wasteful number, since it uses less digits than its factorization.

84649172 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 13690 (or 13688 counting only the distinct ones).

The product of its digits is 96768, while the sum is 41.

The square root of 84649172 is about 9200.4984647572. The cubic root of 84649172 is about 439.0772189617.

The spelling of 84649172 in words is "eighty-four million, six hundred forty-nine thousand, one hundred seventy-two".