400140341 has 2 divisors, whose sum is σ = 400140342. Its totient is φ = 400140340.

The previous prime is 400140337. The next prime is 400140353. The reversal of 400140341 is 143041004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 388917841 + 11222500 = 19721^2 + 3350^2 .

It is a cyclic number.

It is not a de Polignac number, because 400140341 - 2² = 400140337 is a prime.

It is a super-2 number, since 2×400140341² = 320224584991192562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400145341) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200070170 + 200070171.

It is an arithmetic number, because the mean of its divisors is an integer number (200070171).

Almost surely, 2^400140341 is an apocalyptic number.

It is an amenable number.

400140341 is a deficient number, since it is larger than the sum of its proper divisors (1).

400140341 is an equidigital number, since it uses as much as digits as its factorization.

400140341 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 192, while the sum is 17.

The square root of 400140341 is about 20003.5082173103. The cubic root of 400140341 is about 736.8924597631.

Adding to 400140341 its reverse (143041004), we get a palindrome (543181345).

The spelling of 400140341 in words is "four hundred million, one hundred forty thousand, three hundred forty-one".