22890029 has 2 divisors, whose sum is σ = 22890030. Its totient is φ = 22890028.

The previous prime is 22889969. The next prime is 22890031. The reversal of 22890029 is 92009822.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 18576100 + 4313929 = 4310^2 + 2077^2 .

It is a cyclic number.

It is not a de Polignac number, because 22890029 - 2¹⁶ = 22824493 is a prime.

Together with 22890031, it forms a pair of twin primes.

It is a Chen prime.

It is a junction number, because it is equal to n+sod(n) for n = 22889977 and 22890004.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (22890089) 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 as a sum of consecutive naturals, namely, 11445014 + 11445015.

It is an arithmetic number, because the mean of its divisors is an integer number (11445015).

Almost surely, 2^22890029 is an apocalyptic number.

It is an amenable number.

22890029 is a deficient number, since it is larger than the sum of its proper divisors (1).

22890029 is an equidigital number, since it uses as much as digits as its factorization.

22890029 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 5184, while the sum is 32.

The square root of 22890029 is about 4784.3525162764. The cubic root of 22890029 is about 283.9327231039.

The spelling of 22890029 in words is "twenty-two million, eight hundred ninety thousand, twenty-nine".