393281401 has 2 divisors, whose sum is σ = 393281402. Its totient is φ = 393281400.

The previous prime is 393281387. The next prime is 393281453. The reversal of 393281401 is 104182393.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 389667600 + 3613801 = 19740^2 + 1901^2 .

It is a cyclic number.

It is not a de Polignac number, because 393281401 - 2¹⁵ = 393248633 is a prime.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (393281461) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 196640700 + 196640701.

It is an arithmetic number, because the mean of its divisors is an integer number (196640701).

Almost surely, 2^393281401 is an apocalyptic number.

It is an amenable number.

393281401 is a deficient number, since it is larger than the sum of its proper divisors (1).

393281401 is an equidigital number, since it uses as much as digits as its factorization.

393281401 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 5184, while the sum is 31.

The square root of 393281401 is about 19831.3237329231. The cubic root of 393281401 is about 732.6577300920.

The spelling of 393281401 in words is "three hundred ninety-three million, two hundred eighty-one thousand, four hundred one".