405455243 has 2 divisors, whose sum is σ = 405455244. Its totient is φ = 405455242.

The previous prime is 405455233. The next prime is 405455251. The reversal of 405455243 is 342554504.

It is a strong prime.

It is a cyclic number.

It is not a de Polignac number, because 405455243 - 2⁶ = 405455179 is a prime.

It is not a weakly prime, because it can be changed into another prime (405455233) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202727621 + 202727622.

It is an arithmetic number, because the mean of its divisors is an integer number (202727622).

Almost surely, 2^405455243 is an apocalyptic number.

405455243 is a deficient number, since it is larger than the sum of its proper divisors (1).

405455243 is an equidigital number, since it uses as much as digits as its factorization.

405455243 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 48000, while the sum is 32.

The square root of 405455243 is about 20135.9192241129. The cubic root of 405455243 is about 740.1407347378.

The spelling of 405455243 in words is "four hundred five million, four hundred fifty-five thousand, two hundred forty-three".