422139999 has 32 divisors (see below), whose sum is σ = 601620480. Its totient is φ = 262719072.

The previous prime is 422139997. The next prime is 422140003. The reversal of 422139999 is 999931224.

It is not a de Polignac number, because 422139999 - 2¹ = 422139997 is a prime.

It is a Smith number, since the sum of its digits (48) coincides with the sum of the digits of its prime factors. Since it is squarefree, it is also a hoax number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (422139997) by changing a digit.

It is a polite number, since it can be written in 31 ways as a sum of consecutive naturals, for example, 586762 + ... + 587480.

It is an arithmetic number, because the mean of its divisors is an integer number (18800640).

Almost surely, 2^422139999 is an apocalyptic number.

422139999 is a deficient number, since it is larger than the sum of its proper divisors (179480481).

422139999 is a wasteful number, since it uses less digits than its factorization.

422139999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 939.

The product of its digits is 314928, while the sum is 48.

The square root of 422139999 is about 20546.0458239536. The cubic root of 422139999 is about 750.1570035753.

The spelling of 422139999 in words is "four hundred twenty-two million, one hundred thirty-nine thousand, nine hundred ninety-nine".