8423722 has 4 divisors (see below), whose sum is σ = 12635586. Its totient is φ = 4211860.

The previous prime is 8423711. The next prime is 8423729. The reversal of 8423722 is 2273248.

It is a semiprime because it is the product of two primes.

It can be written as a sum of positive squares in only one way, i.e., 8415801 + 7921 = 2901^2 + 89^2 .

It is a d-powerful number, because it can be written as 8 + 4² + 2⁷ + 3⁷ + 7 + 2¹⁵ + 2²³ .

It is not an unprimeable number, because it can be changed into a prime (8423729) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (7) of ones.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 2105929 + ... + 2105932.

Almost surely, 2^8423722 is an apocalyptic number.

8423722 is a deficient number, since it is larger than the sum of its proper divisors (4211864).

8423722 is a wasteful number, since it uses less digits than its factorization.

8423722 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 4211863.

The product of its digits is 5376, while the sum is 28.

The square root of 8423722 is about 2902.3648978032. The cubic root of 8423722 is about 203.4704482923.

The spelling of 8423722 in words is "eight million, four hundred twenty-three thousand, seven hundred twenty-two".