405468487 has 2 divisors, whose sum is σ = 405468488. Its totient is φ = 405468486.

The previous prime is 405468463. The next prime is 405468551. The reversal of 405468487 is 784864504.

It is a weak prime.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405468487 is a prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (405468787) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 202734243 + 202734244.

It is an arithmetic number, because the mean of its divisors is an integer number (202734244).

Almost surely, 2^405468487 is an apocalyptic number.

405468487 is a deficient number, since it is larger than the sum of its proper divisors (1).

405468487 is an equidigital number, since it uses as much as digits as its factorization.

405468487 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 860160, while the sum is 46.

The square root of 405468487 is about 20136.2480864733. The cubic root of 405468487 is about 740.1487934301.

The spelling of 405468487 in words is "four hundred five million, four hundred sixty-eight thousand, four hundred eighty-seven".