394727273 has 2 divisors, whose sum is σ = 394727274. Its totient is φ = 394727272.

The previous prime is 394727237. The next prime is 394727293. The reversal of 394727273 is 372727493.

Together with previous prime (394727237) it forms an Ormiston pair, because they use the same digits, order apart.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 394697689 + 29584 = 19867^2 + 172^2 .

It is a cyclic number.

It is not a de Polignac number, because 394727273 - 2¹⁶ = 394661737 is a prime.

It is not a weakly prime, because it can be changed into another prime (394727293) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 197363636 + 197363637.

It is an arithmetic number, because the mean of its divisors is an integer number (197363637).

Almost surely, 2^394727273 is an apocalyptic number.

It is an amenable number.

394727273 is a deficient number, since it is larger than the sum of its proper divisors (1).

394727273 is an equidigital number, since it uses as much as digits as its factorization.

394727273 is an evil number, because the sum of its binary digits is even.

The product of its digits is 444528, while the sum is 44.

The square root of 394727273 is about 19867.7445373147. The cubic root of 394727273 is about 733.5544872707.

The spelling of 394727273 in words is "three hundred ninety-four million, seven hundred twenty-seven thousand, two hundred seventy-three".