400343117 has 2 divisors, whose sum is σ = 400343118. Its totient is φ = 400343116.

The previous prime is 400343101. The next prime is 400343131. The reversal of 400343117 is 711343004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 261598276 + 138744841 = 16174^2 + 11779^2 .

It is a cyclic number.

It is not a de Polignac number, because 400343117 - 2⁴ = 400343101 is a prime.

It is a super-2 number, since 2×400343117² = 320549222658551378, which contains 22 as substring.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 400343092 and 400343101.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (400343197) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200171558 + 200171559.

It is an arithmetic number, because the mean of its divisors is an integer number (200171559).

Almost surely, 2^400343117 is an apocalyptic number.

It is an amenable number.

400343117 is a deficient number, since it is larger than the sum of its proper divisors (1).

400343117 is an equidigital number, since it uses as much as digits as its factorization.

400343117 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1008, while the sum is 23.

The square root of 400343117 is about 20008.5760862686. The cubic root of 400343117 is about 737.0169151574.

The spelling of 400343117 in words is "four hundred million, three hundred forty-three thousand, one hundred seventeen".