400112329 has 2 divisors, whose sum is σ = 400112330. Its totient is φ = 400112328.

The previous prime is 400112309. The next prime is 400112369. The reversal of 400112329 is 923211004.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 350550729 + 49561600 = 18723^2 + 7040^2 .

It is a cyclic number.

It is not a de Polignac number, because 400112329 - 2⁷ = 400112201 is a prime.

It is not a weakly prime, because it can be changed into another prime (400112309) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200056164 + 200056165.

It is an arithmetic number, because the mean of its divisors is an integer number (200056165).

Almost surely, 2^400112329 is an apocalyptic number.

It is an amenable number.

400112329 is a deficient number, since it is larger than the sum of its proper divisors (1).

400112329 is an equidigital number, since it uses as much as digits as its factorization.

400112329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 432, while the sum is 22.

The square root of 400112329 is about 20002.8080278745. The cubic root of 400112329 is about 736.8752638686.

The spelling of 400112329 in words is "four hundred million, one hundred twelve thousand, three hundred twenty-nine".