405728611 has 2 divisors, whose sum is σ = 405728612. Its totient is φ = 405728610.

The previous prime is 405728599. The next prime is 405728627. The reversal of 405728611 is 116827504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405728611 - 2¹⁹ = 405204323 is a prime.

It is not a weakly prime, because it can be changed into another prime (405720611) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202864305 + 202864306.

It is an arithmetic number, because the mean of its divisors is an integer number (202864306).

Almost surely, 2^405728611 is an apocalyptic number.

405728611 is a deficient number, since it is larger than the sum of its proper divisors (1).

405728611 is an equidigital number, since it uses as much as digits as its factorization.

405728611 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 13440, while the sum is 34.

The square root of 405728611 is about 20142.7061488768. The cubic root of 405728611 is about 740.3070377933.

The spelling of 405728611 in words is "four hundred five million, seven hundred twenty-eight thousand, six hundred eleven".