401412643 has 2 divisors, whose sum is σ = 401412644. Its totient is φ = 401412642.

The previous prime is 401412623. The next prime is 401412701. The reversal of 401412643 is 346214104.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 401412643 - 2⁹ = 401412131 is a prime.

It is a super-2 number, since 2×401412643² = 322264219920490898, which contains 22 as substring.

It is not a weakly prime, because it can be changed into another prime (401412623) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 200706321 + 200706322.

It is an arithmetic number, because the mean of its divisors is an integer number (200706322).

Almost surely, 2^401412643 is an apocalyptic number.

401412643 is a deficient number, since it is larger than the sum of its proper divisors (1).

401412643 is an equidigital number, since it uses as much as digits as its factorization.

401412643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 2304, while the sum is 25.

The square root of 401412643 is about 20035.2849493088. The cubic root of 401412643 is about 737.6726508744.

Adding to 401412643 its reverse (346214104), we get a palindrome (747626747).

The spelling of 401412643 in words is "four hundred one million, four hundred twelve thousand, six hundred forty-three".