394000237 has 2 divisors, whose sum is σ = 394000238. Its totient is φ = 394000236.

The previous prime is 394000231. The next prime is 394000247. The reversal of 394000237 is 732000493.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 351150121 + 42850116 = 18739^2 + 6546^2 .

It is a cyclic number.

It is not a de Polignac number, because 394000237 - 2¹⁹ = 393475949 is a prime.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (394000231) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197000118 + 197000119.

It is an arithmetic number, because the mean of its divisors is an integer number (197000119).

Almost surely, 2^394000237 is an apocalyptic number.

It is an amenable number.

394000237 is a deficient number, since it is larger than the sum of its proper divisors (1).

394000237 is an equidigital number, since it uses as much as digits as its factorization.

394000237 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 4536, while the sum is 28.

The square root of 394000237 is about 19849.4392112221. The cubic root of 394000237 is about 733.1038400114.

The spelling of 394000237 in words is "three hundred ninety-four million, two hundred thirty-seven", and thus it is an aban number.