401133493 has 2 divisors, whose sum is σ = 401133494. Its totient is φ = 401133492.

The previous prime is 401133487. The next prime is 401133511. The reversal of 401133493 is 394331104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 400880484 + 253009 = 20022^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 401133493 - 2¹³ = 401125301 is a prime.

It is equal to p_21393406 and since 401133493 and 21393406 have the same sum of digits, it is a Honaker prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401133193) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (19) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200566746 + 200566747.

It is an arithmetic number, because the mean of its divisors is an integer number (200566747).

Almost surely, 2^401133493 is an apocalyptic number.

It is an amenable number.

401133493 is a deficient number, since it is larger than the sum of its proper divisors (1).

401133493 is an equidigital number, since it uses as much as digits as its factorization.

401133493 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 3888, while the sum is 28.

The square root of 401133493 is about 20028.3172782938. The cubic root of 401133493 is about 737.5016140154.

Adding to 401133493 its reverse (394331104), we get a palindrome (795464597).

The spelling of 401133493 in words is "four hundred one million, one hundred thirty-three thousand, four hundred ninety-three".