401393 has 2 divisors, whose sum is σ = 401394. Its totient is φ = 401392.

The previous prime is 401381. The next prime is 401407. The reversal of 401393 is 393104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 339889 + 61504 = 583^2 + 248^2 .

It is a cyclic number.

It is not a de Polignac number, because 401393 - 2⁶ = 401329 is a prime.

It is a super-2 number, since 2×401393² = 322232680898, which contains 22 as substring.

It is a Sophie Germain prime.

It is a Chen prime.

It is a Curzon number.

It is not a weakly prime, because it can be changed into another prime (401593) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200696 + 200697.

It is an arithmetic number, because the mean of its divisors is an integer number (200697).

2⁴⁰¹³⁹³ is an apocalyptic number.

It is an amenable number.

401393 is a deficient number, since it is larger than the sum of its proper divisors (1).

401393 is an equidigital number, since it uses as much as digits as its factorization.

401393 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 324, while the sum is 20.

The square root of 401393 is about 633.5558381074. Note that the first 3 decimals coincide. The cubic root of 401393 is about 73.7660618086.

Adding to 401393 its reverse (393104), we get a palindrome (794497).

The spelling of 401393 in words is "four hundred one thousand, three hundred ninety-three".