999999422 has 8 divisors (see below), whose sum is σ = 1506276000. Its totient is φ = 497907424.

The previous prime is 999999391. The next prime is 999999433. The reversal of 999999422 is 224999999.

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

It is a nialpdrome in base 10.

It is a congruent number.

It is an unprimeable number.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 1045547 + ... + 1046502.

It is an arithmetic number, because the mean of its divisors is an integer number (188284500).

Almost surely, 2^999999422 is an apocalyptic number.

999999422 is a deficient number, since it is larger than the sum of its proper divisors (506276578).

999999422 is a wasteful number, since it uses less digits than its factorization.

999999422 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 2092290.

The product of its digits is 8503056, while the sum is 62.

The square root of 999999422 is about 31622.7674627000. The cubic root of 999999422 is about 999.9998073333. Note that the first 3 decimals are identical.

The spelling of 999999422 in words is "nine hundred ninety-nine million, nine hundred ninety-nine thousand, four hundred twenty-two".