97844172 has 12 divisors (see below), whose sum is σ = 228303096. Its totient is φ = 32614720.

The previous prime is 97844171. The next prime is 97844179. The reversal of 97844172 is 27144879.

It is a happy number.

It is a tau number, because it is divible by the number of its divisors (12).

It is not an unprimeable number, because it can be changed into a prime (97844171) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 4076829 + ... + 4076852.

It is an arithmetic number, because the mean of its divisors is an integer number (19025258).

Almost surely, 2^97844172 is an apocalyptic number.

It is an amenable number.

97844172 is an abundant number, since it is smaller than the sum of its proper divisors (130458924).

It is a pseudoperfect number, because it is the sum of a subset of its proper divisors.

97844172 is a wasteful number, since it uses less digits than its factorization.

97844172 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 8153688 (or 8153686 counting only the distinct ones).

The product of its digits is 112896, while the sum is 42.

The square root of 97844172 is about 9891.6213029008. The cubic root of 97844172 is about 460.7991339020.

It can be divided in two parts, 978 and 44172, that added together give a triangular number (45150 = T₃₀₀).

The spelling of 97844172 in words is "ninety-seven million, eight hundred forty-four thousand, one hundred seventy-two".