400070329 has 2 divisors, whose sum is σ = 400070330. Its totient is φ = 400070328.

The previous prime is 400070311. The next prime is 400070339. The reversal of 400070329 is 923070004.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 358079929 + 41990400 = 18923^2 + 6480^2 .

It is a cyclic number.

It is not a de Polignac number, because 400070329 - 2¹¹ = 400068281 is a prime.

It is not a weakly prime, because it can be changed into another prime (400070309) 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, 200035164 + 200035165.

It is an arithmetic number, because the mean of its divisors is an integer number (200035165).

Almost surely, 2^400070329 is an apocalyptic number.

It is an amenable number.

400070329 is a deficient number, since it is larger than the sum of its proper divisors (1).

400070329 is an equidigital number, since it uses as much as digits as its factorization.

400070329 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 1512, while the sum is 25.

The square root of 400070329 is about 20001.7581477229. The cubic root of 400070329 is about 736.8494795727.

The spelling of 400070329 in words is "four hundred million, seventy thousand, three hundred twenty-nine".