406917643 has 8 divisors (see below), whose sum is σ = 454234176. Its totient is φ = 361321800.

The previous prime is 406917617. The next prime is 406917649. The reversal of 406917643 is 346719604.

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

It is a cyclic number.

It is a de Polignac number, because none of the positive numbers 2^k-406917643 is a prime.

It is a junction number, because it is equal to n+sod(n) for n = 406917596 and 406917605.

It is not an unprimeable number, because it can be changed into a prime (406917649) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 429673 + ... + 430618.

It is an arithmetic number, because the mean of its divisors is an integer number (56779272).

Almost surely, 2^406917643 is an apocalyptic number.

406917643 is a gapful number since it is divisible by the number (43) formed by its first and last digit.

406917643 is a deficient number, since it is larger than the sum of its proper divisors (47316533).

406917643 is a wasteful number, since it uses less digits than its factorization.

406917643 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 860345.

The product of its (nonzero) digits is 108864, while the sum is 40.

The square root of 406917643 is about 20172.1997561000. The cubic root of 406917643 is about 741.0295160236.

It can be divided in two parts, 4069 and 17643, that added together give a palindrome (21712).

The spelling of 406917643 in words is "four hundred six million, nine hundred seventeen thousand, six hundred forty-three".