97191938 has 8 divisors (see below), whose sum is σ = 146038032. Its totient is φ = 48512596.

The previous prime is 97191937. The next prime is 97191959. The reversal of 97191938 is 83919179.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a junction number, because it is equal to n+sod(n) for n = 97191892 and 97191901.

It is not an unprimeable number, because it can be changed into a prime (97191937) 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, 40220 + ... + 42567.

It is an arithmetic number, because the mean of its divisors is an integer number (18254754).

Almost surely, 2^97191938 is an apocalyptic number.

97191938 is a deficient number, since it is larger than the sum of its proper divisors (48846094).

97191938 is a wasteful number, since it uses less digits than its factorization.

97191938 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 83376.

The product of its digits is 122472, while the sum is 47.

The square root of 97191938 is about 9858.5971618684. The cubic root of 97191938 is about 459.7729471780.

The spelling of 97191938 in words is "ninety-seven million, one hundred ninety-one thousand, nine hundred thirty-eight".