22149999 has 24 divisors (see below), whose sum is σ = 32867120. Its totient is φ = 14370048.

The previous prime is 22149977. The next prime is 22150001. The reversal of 22149999 is 99994122.

It is not a de Polignac number, because 22149999 - 2⁷ = 22149871 is a prime.

It is a Duffinian number.

22149999 is a modest number, since divided by 9999 gives 2214 as remainder.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22149949) by changing a digit.

It is a pernicious number, because its binary representation contains a prime number (17) of ones.

It is a polite number, since it can be written in 23 ways as a sum of consecutive naturals, for example, 65559 + ... + 65895.

Almost surely, 2^22149999 is an apocalyptic number.

22149999 is a deficient number, since it is larger than the sum of its proper divisors (10717121).

22149999 is a wasteful number, since it uses less digits than its factorization.

22149999 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 519 (or 516 counting only the distinct ones).

The product of its digits is 104976, while the sum is 45.

The square root of 22149999 is about 4706.3785440612. The cubic root of 22149999 is about 280.8393140830.

The spelling of 22149999 in words is "twenty-two million, one hundred forty-nine thousand, nine hundred ninety-nine".