97811944 has 32 divisors (see below), whose sum is σ = 190656000. Its totient is φ = 46992960.

The previous prime is 97811933. The next prime is 97811947. The reversal of 97811944 is 44911879.

It is a Smith number, since the sum of its digits (43) coincides with the sum of the digits of its prime factors.

It is a self number, because there is not a number n which added to its sum of digits gives 97811944.

It is not an unprimeable number, because it can be changed into a prime (97811947) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 35629 + ... + 38275.

It is an arithmetic number, because the mean of its divisors is an integer number (5958000).

Almost surely, 2^97811944 is an apocalyptic number.

It is an amenable number.

97811944 is a deficient number, since it is larger than the sum of its proper divisors (92844056).

97811944 is a wasteful number, since it uses less digits than its factorization.

97811944 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2833 (or 2829 counting only the distinct ones).

The product of its digits is 72576, while the sum is 43.

The square root of 97811944 is about 9889.9921132426. The cubic root of 97811944 is about 460.7485355373.

The spelling of 97811944 in words is "ninety-seven million, eight hundred eleven thousand, nine hundred forty-four".