401622293 has 2 divisors, whose sum is σ = 401622294. Its totient is φ = 401622292.

The previous prime is 401622283. The next prime is 401622317. The reversal of 401622293 is 392226104.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 214534609 + 187087684 = 14647^2 + 13678^2 .

It is a cyclic number.

It is not a de Polignac number, because 401622293 - 2⁸ = 401622037 is a prime.

It is a super-3 number, since 3×401622293³ (a number of 27 digits) contains 333 as substring. Note that it is a super-d number also for d = 2.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (401622283) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200811146 + 200811147.

It is an arithmetic number, because the mean of its divisors is an integer number (200811147).

Almost surely, 2^401622293 is an apocalyptic number.

It is an amenable number.

401622293 is a deficient number, since it is larger than the sum of its proper divisors (1).

401622293 is an equidigital number, since it uses as much as digits as its factorization.

401622293 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 29.

The square root of 401622293 is about 20040.5162857647. The cubic root of 401622293 is about 737.8010525392.

Adding to 401622293 its reverse (392226104), we get a palindrome (793848397).

The spelling of 401622293 in words is "four hundred one million, six hundred twenty-two thousand, two hundred ninety-three".