999996406 has 8 divisors (see below), whose sum is σ = 1588229640. Its totient is φ = 470586528.

The previous prime is 999996383. The next prime is 999996407. The reversal of 999996406 is 604699999.

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

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (999996407) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 14705796 + ... + 14705863.

It is an arithmetic number, because the mean of its divisors is an integer number (198528705).

Almost surely, 2^999996406 is an apocalyptic number.

999996406 is a deficient number, since it is larger than the sum of its proper divisors (588233234).

999996406 is a wasteful number, since it uses less digits than its factorization.

999996406 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 29411678.

The product of its (nonzero) digits is 8503056, while the sum is 61.

The square root of 999996406 is about 31622.7197755032. The cubic root of 999996406 is about 999.9988019986.

The spelling of 999996406 in words is "nine hundred ninety-nine million, nine hundred ninety-six thousand, four hundred six".