400341043 has 2 divisors, whose sum is σ = 400341044. Its totient is φ = 400341042.

The previous prime is 400341023. The next prime is 400341083. The reversal of 400341043 is 340143004.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 400341043 - 2¹³ = 400332851 is a prime.

It is a self number, because there is not a number n which added to its sum of digits gives 400341043.

It is not a weakly prime, because it can be changed into another prime (400341023) 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, 200170521 + 200170522.

It is an arithmetic number, because the mean of its divisors is an integer number (200170522).

Almost surely, 2^400341043 is an apocalyptic number.

400341043 is a deficient number, since it is larger than the sum of its proper divisors (1).

400341043 is an equidigital number, since it uses as much as digits as its factorization.

400341043 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 576, while the sum is 19.

The square root of 400341043 is about 20008.5242584255. The cubic root of 400341043 is about 737.0156424360.

Adding to 400341043 its reverse (340143004), we get a palindrome (740484047).

The spelling of 400341043 in words is "four hundred million, three hundred forty-one thousand, forty-three".