97971406 has 16 divisors (see below), whose sum is σ = 161630784. Its totient is φ = 44254944.

The previous prime is 97971403. The next prime is 97971407. The reversal of 97971406 is 60417979.

It is a happy number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97971403) 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 7 ways as a sum of consecutive naturals, for example, 38865 + ... + 41308.

It is an arithmetic number, because the mean of its divisors is an integer number (10101924).

Almost surely, 2^97971406 is an apocalyptic number.

97971406 is a deficient number, since it is larger than the sum of its proper divisors (63659378).

97971406 is a wasteful number, since it uses less digits than its factorization.

97971406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 80235.

The product of its (nonzero) digits is 95256, while the sum is 43.

The square root of 97971406 is about 9898.0506161567. The cubic root of 97971406 is about 460.9987844306.

The spelling of 97971406 in words is "ninety-seven million, nine hundred seventy-one thousand, four hundred six".