97891238 has 8 divisors (see below), whose sum is σ = 146878920. Its totient is φ = 48931600.

The previous prime is 97891237. The next prime is 97891247. The reversal of 97891238 is 83219879.

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 = 97891192 and 97891201.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (97891237) 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, 9413 + ... + 16863.

It is an arithmetic number, because the mean of its divisors is an integer number (18359865).

Almost surely, 2^97891238 is an apocalyptic number.

97891238 is a deficient number, since it is larger than the sum of its proper divisors (48987682).

97891238 is a wasteful number, since it uses less digits than its factorization.

97891238 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 14022.

The product of its digits is 217728, while the sum is 47.

The square root of 97891238 is about 9894.0001010714. Note that the first 3 decimals coincide. The cubic root of 97891238 is about 460.8730081553.

The spelling of 97891238 in words is "ninety-seven million, eight hundred ninety-one thousand, two hundred thirty-eight".