397000237 has 2 divisors, whose sum is σ = 397000238. Its totient is φ = 397000236.

The previous prime is 397000223. The next prime is 397000273. The reversal of 397000237 is 732000793.

Together with next prime (397000273) it forms an Ormiston pair, because they use the same digits, order apart.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 366684201 + 30316036 = 19149^2 + 5506^2 .

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-397000237 is a prime.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 397000199 and 397000208.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (397003237) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 198500118 + 198500119.

It is an arithmetic number, because the mean of its divisors is an integer number (198500119).

Almost surely, 2^397000237 is an apocalyptic number.

It is an amenable number.

397000237 is a deficient number, since it is larger than the sum of its proper divisors (1).

397000237 is an equidigital number, since it uses as much as digits as its factorization.

397000237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 7938, while the sum is 31.

The square root of 397000237 is about 19924.8647925149. The cubic root of 397000237 is about 734.9598059066.

The spelling of 397000237 in words is "three hundred ninety-seven million, two hundred thirty-seven", and thus it is an aban number.