406640822 has 32 divisors (see below), whose sum is σ = 715599360. Its totient is φ = 169709760.

The previous prime is 406640791. The next prime is 406640837. The reversal of 406640822 is 228046604.

It is a happy number.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 15 ways as a sum of consecutive naturals, for example, 81047 + ... + 85917.

It is an arithmetic number, because the mean of its divisors is an integer number (22362480).

Almost surely, 2^406640822 is an apocalyptic number.

406640822 is a deficient number, since it is larger than the sum of its proper divisors (308958538).

406640822 is a wasteful number, since it uses less digits than its factorization.

406640822 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 5036.

The product of its (nonzero) digits is 18432, while the sum is 32.

The square root of 406640822 is about 20165.3371407472. The cubic root of 406640822 is about 740.8614401905.

The spelling of 406640822 in words is "four hundred six million, six hundred forty thousand, eight hundred twenty-two".