405768385 has 8 divisors (see below), whose sum is σ = 531187776. Its totient is φ = 295104240.

The previous prime is 405768379. The next prime is 405768421. The reversal of 405768385 is 583867504.

It is a sphenic number, since it is the product of 3 distinct primes.

It is not a de Polignac number, because 405768385 - 2²⁵ = 372213953 is a prime.

It is a Duffinian number.

It is an unprimeable number.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 3688749 + ... + 3688858.

It is an arithmetic number, because the mean of its divisors is an integer number (66398472).

Almost surely, 2^405768385 is an apocalyptic number.

It is an amenable number.

405768385 is a deficient number, since it is larger than the sum of its proper divisors (125419391).

405768385 is a wasteful number, since it uses less digits than its factorization.

405768385 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 7377623.

The product of its (nonzero) digits is 806400, while the sum is 46.

The square root of 405768385 is about 20143.6934299547. The cubic root of 405768385 is about 740.3312280272.

The spelling of 405768385 in words is "four hundred five million, seven hundred sixty-eight thousand, three hundred eighty-five".