22679999 has 4 divisors (see below), whose sum is σ = 22953336. Its totient is φ = 22406664.

The previous prime is 22679971. The next prime is 22680017. The reversal of 22679999 is 99997622.

It is a semiprime because it is the product of two primes, and also an emirpimes, since its reverse is a distinct semiprime: 99997622 = 2 ⋅49998811.

It is a cyclic number.

It is not a de Polignac number, because 22679999 - 2¹² = 22675903 is a prime.

It is a Duffinian number.

22679999 is a modest number, since divided by 9999 gives 2267 as remainder.

It is a plaindrome in base 10.

It is a self number, because there is not a number n which added to its sum of digits gives 22679999.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (22679099) by changing a digit.

It is a polite number, since it can be written in 3 ways as a sum of consecutive naturals, for example, 136544 + ... + 136709.

It is an arithmetic number, because the mean of its divisors is an integer number (5738334).

Almost surely, 2^22679999 is an apocalyptic number.

22679999 is a deficient number, since it is larger than the sum of its proper divisors (273337).

22679999 is an equidigital number, since it uses as much as digits as its factorization.

22679999 is an evil number, because the sum of its binary digits is even.

The sum of its prime factors is 273336.

The product of its digits is 1102248, while the sum is 53.

The square root of 22679999 is about 4762.3522549261. The cubic root of 22679999 is about 283.0616346588.

The spelling of 22679999 in words is "twenty-two million, six hundred seventy-nine thousand, nine hundred ninety-nine".