97211144 has 16 divisors (see below), whose sum is σ = 191864400. Its totient is φ = 46047312.

The previous prime is 97211143. The next prime is 97211189. The reversal of 97211144 is 44111279.

It is not an unprimeable number, because it can be changed into a prime (97211143) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 319622 + ... + 319925.

It is an arithmetic number, because the mean of its divisors is an integer number (11991525).

Almost surely, 2^97211144 is an apocalyptic number.

It is an amenable number.

97211144 is a deficient number, since it is larger than the sum of its proper divisors (94653256).

97211144 is a wasteful number, since it uses less digits than its factorization.

97211144 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 639572 (or 639568 counting only the distinct ones).

The product of its digits is 2016, while the sum is 29.

The square root of 97211144 is about 9859.5711874300. The cubic root of 97211144 is about 459.8032302715.

The spelling of 97211144 in words is "ninety-seven million, two hundred eleven thousand, one hundred forty-four".