405864468487 has 2 divisors, whose sum is σ = 405864468488. Its totient is φ = 405864468486.

The previous prime is 405864468473. The next prime is 405864468509. The reversal of 405864468487 is 784864468504.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 405864468487 - 2¹⁵ = 405864435719 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405864468407) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202932234243 + 202932234244.

It is an arithmetic number, because the mean of its divisors is an integer number (202932234244).

Almost surely, 2^405864468487 is an apocalyptic number.

405864468487 is a deficient number, since it is larger than the sum of its proper divisors (1).

405864468487 is an equidigital number, since it uses as much as digits as its factorization.

405864468487 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 165150720, while the sum is 64.

The spelling of 405864468487 in words is "four hundred five billion, eight hundred sixty-four million, four hundred sixty-eight thousand, four hundred eighty-seven".