22099939 has 2 divisors, whose sum is σ = 22099940. Its totient is φ = 22099938.

The previous prime is 22099937. The next prime is 22099967. The reversal of 22099939 is 93999022.

It is a weak prime.

It is a cyclic number.

It is not a de Polignac number, because 22099939 - 2¹ = 22099937 is a prime.

Together with 22099937, it forms a pair of twin primes.

It is a junction number, because it is equal to n+sod(n) for n = 22099895 and 22099904.

It is not a weakly prime, because it can be changed into another prime (22099933) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11049969 + 11049970.

It is an arithmetic number, because the mean of its divisors is an integer number (11049970).

Almost surely, 2^22099939 is an apocalyptic number.

22099939 is a deficient number, since it is larger than the sum of its proper divisors (1).

22099939 is an equidigital number, since it uses as much as digits as its factorization.

22099939 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 78732, while the sum is 43.

The square root of 22099939 is about 4701.0572215194. The cubic root of 22099939 is about 280.6275846443.

It can be divided in two parts, 2209 and 9939, that multiplied together give a triangular number (21955251 = T₆₆₂₆).

The spelling of 22099939 in words is "twenty-two million, ninety-nine thousand, nine hundred thirty-nine".