405352643 has 2 divisors, whose sum is σ = 405352644. Its totient is φ = 405352642.

The previous prime is 405352567. The next prime is 405352657. The reversal of 405352643 is 346253504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405352643 - 2¹⁰ = 405351619 is a prime.

It is not a weakly prime, because it can be changed into another prime (405352543) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (11) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202676321 + 202676322.

It is an arithmetic number, because the mean of its divisors is an integer number (202676322).

Almost surely, 2^405352643 is an apocalyptic number.

405352643 is a deficient number, since it is larger than the sum of its proper divisors (1).

405352643 is an equidigital number, since it uses as much as digits as its factorization.

405352643 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 43200, while the sum is 32.

The square root of 405352643 is about 20133.3713768956. The cubic root of 405352643 is about 740.0782988735.

The spelling of 405352643 in words is "four hundred five million, three hundred fifty-two thousand, six hundred forty-three".