938396197 has 2 divisors, whose sum is σ = 938396198. Its totient is φ = 938396196.

The previous prime is 938396191. The next prime is 938396201. The reversal of 938396197 is 791693839.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 911677636 + 26718561 = 30194^2 + 5169^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-938396197 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (938396191) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 469198098 + 469198099.

It is an arithmetic number, because the mean of its divisors is an integer number (469198099).

Almost surely, 2^938396197 is an apocalyptic number.

It is an amenable number.

938396197 is a deficient number, since it is larger than the sum of its proper divisors (1).

938396197 is an equidigital number, since it uses as much as digits as its factorization.

938396197 is an evil number, because the sum of its binary digits is even.

The product of its digits is 2204496, while the sum is 55.

The square root of 938396197 is about 30633.2531246683. The cubic root of 938396197 is about 979.0286769816.

The spelling of 938396197 in words is "nine hundred thirty-eight million, three hundred ninety-six thousand, one hundred ninety-seven".