22399906 has 8 divisors (see below), whose sum is σ = 33748560. Its totient is φ = 11150388.

The previous prime is 22399903. The next prime is 22399933. The reversal of 22399906 is 60999322.

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

It is not an unprimeable number, because it can be changed into a prime (22399901) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (13) of ones.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 24216 + ... + 25123.

It is an arithmetic number, because the mean of its divisors is an integer number (4218570).

Almost surely, 2^22399906 is an apocalyptic number.

22399906 is a deficient number, since it is larger than the sum of its proper divisors (11348654).

22399906 is a wasteful number, since it uses less digits than its factorization.

22399906 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 49568.

The product of its (nonzero) digits is 52488, while the sum is 40.

The square root of 22399906 is about 4732.8538959068. The cubic root of 22399906 is about 281.8915549689.

The spelling of 22399906 in words is "twenty-two million, three hundred ninety-nine thousand, nine hundred six".