405667417 has 4 divisors (see below), whose sum is σ = 405953920. Its totient is φ = 405380916.

The previous prime is 405667411. The next prime is 405667453. The reversal of 405667417 is 714766504.

It is a semiprime because it is the product of two primes, and also a Blum integer, because the two primes are equal to 3 mod 4.

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-405667417 is a prime.

It is a Duffinian number.

It is a self number, because there is not a number n which added to its sum of digits gives 405667417.

It is not an unprimeable number, because it can be changed into a prime (405667411) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 141117 + ... + 143962.

It is an arithmetic number, because the mean of its divisors is an integer number (101488480).

Almost surely, 2^405667417 is an apocalyptic number.

It is an amenable number.

405667417 is a deficient number, since it is larger than the sum of its proper divisors (286503).

405667417 is a wasteful number, since it uses less digits than its factorization.

405667417 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 286502.

The product of its (nonzero) digits is 141120, while the sum is 40.

The square root of 405667417 is about 20141.1870802095. The cubic root of 405667417 is about 740.2698169964.

The spelling of 405667417 in words is "four hundred five million, six hundred sixty-seven thousand, four hundred seventeen".