401401628893 has 2 divisors, whose sum is σ = 401401628894. Its totient is φ = 401401628892.

The previous prime is 401401628839. The next prime is 401401628941. The reversal of 401401628893 is 398826104104.

Together with previous prime (401401628839) 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., 347602218084 + 53799410809 = 589578^2 + 231947^2 .

It is a cyclic number.

It is not a de Polignac number, because 401401628893 - 2¹³ = 401401620701 is a prime.

It is a super-3 number, since 3×401401628893³ (a number of 36 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401401626893) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (23) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200700814446 + 200700814447.

It is an arithmetic number, because the mean of its divisors is an integer number (200700814447).

Almost surely, 2^401401628893 is an apocalyptic number.

It is an amenable number.

401401628893 is a deficient number, since it is larger than the sum of its proper divisors (1).

401401628893 is an equidigital number, since it uses as much as digits as its factorization.

401401628893 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 331776, while the sum is 46.

The spelling of 401401628893 in words is "four hundred one billion, four hundred one million, six hundred twenty-eight thousand, eight hundred ninety-three".