22342009 has 2 divisors, whose sum is σ = 22342010. Its totient is φ = 22342008.

The previous prime is 22341971. The next prime is 22342031. The reversal of 22342009 is 90024322.

It is an a-pointer prime, because the next prime (22342031) can be obtained adding 22342009 to its sum of digits (22).

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 22325625 + 16384 = 4725^2 + 128^2 .

It is a cyclic number.

It is not a de Polignac number, because 22342009 - 2⁷ = 22341881 is a prime.

It is not a weakly prime, because it can be changed into another prime (22342079) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11171004 + 11171005.

It is an arithmetic number, because the mean of its divisors is an integer number (11171005).

Almost surely, 2^22342009 is an apocalyptic number.

It is an amenable number.

22342009 is a deficient number, since it is larger than the sum of its proper divisors (1).

22342009 is an equidigital number, since it uses as much as digits as its factorization.

22342009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 864, while the sum is 22.

The square root of 22342009 is about 4726.7334386445. The cubic root of 22342009 is about 281.6484772089.

The spelling of 22342009 in words is "twenty-two million, three hundred forty-two thousand, nine".