401343443 has 2 divisors, whose sum is σ = 401343444. Its totient is φ = 401343442.

The previous prime is 401343377. The next prime is 401343451. The reversal of 401343443 is 344343104.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 401343443 - 2²⁸ = 132907987 is a prime.

It is a super-2 number, since 2×401343443² = 322153118478188498, which contains 22 as substring.

It is a Sophie Germain prime.

It is not a weakly prime, because it can be changed into another prime (401343743) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200671721 + 200671722.

It is an arithmetic number, because the mean of its divisors is an integer number (200671722).

Almost surely, 2^401343443 is an apocalyptic number.

401343443 is a deficient number, since it is larger than the sum of its proper divisors (1).

401343443 is an equidigital number, since it uses as much as digits as its factorization.

401343443 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 6912, while the sum is 26.

The square root of 401343443 is about 20033.5579216474. The cubic root of 401343443 is about 737.6302590182.

Adding to 401343443 its reverse (344343104), we get a palindrome (745686547).

The spelling of 401343443 in words is "four hundred one million, three hundred forty-three thousand, four hundred forty-three".