400143307 has 2 divisors, whose sum is σ = 400143308. Its totient is φ = 400143306.

The previous prime is 400143301. The next prime is 400143311. The reversal of 400143307 is 703341004.

It is a happy number.

It is a strong prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-400143307 is a prime.

It is a super-2 number, since 2×400143307² = 320229332273792498, which contains 22 as substring.

It is a Chen prime.

It is not a weakly prime, because it can be changed into another prime (400143301) 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, 200071653 + 200071654.

It is an arithmetic number, because the mean of its divisors is an integer number (200071654).

Almost surely, 2^400143307 is an apocalyptic number.

400143307 is a deficient number, since it is larger than the sum of its proper divisors (1).

400143307 is an equidigital number, since it uses as much as digits as its factorization.

400143307 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 22.

The square root of 400143307 is about 20003.5823541685. The cubic root of 400143307 is about 736.8942804724.

The spelling of 400143307 in words is "four hundred million, one hundred forty-three thousand, three hundred seven".