23779009 has 2 divisors, whose sum is σ = 23779010. Its totient is φ = 23779008.

The previous prime is 23779003. The next prime is 23779069. The reversal of 23779009 is 90097732.

It is a weak prime.

It can be written as a sum of positive squares in only one way, i.e., 13359025 + 10419984 = 3655^2 + 3228^2 .

It is a cyclic number.

It is not a de Polignac number, because 23779009 - 2⁵ = 23778977 is a prime.

It is not a weakly prime, because it can be changed into another prime (23779003) 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, 11889504 + 11889505.

It is an arithmetic number, because the mean of its divisors is an integer number (11889505).

Almost surely, 2^23779009 is an apocalyptic number.

It is an amenable number.

23779009 is a deficient number, since it is larger than the sum of its proper divisors (1).

23779009 is an equidigital number, since it uses as much as digits as its factorization.

23779009 is an odious number, because the sum of its binary digits is odd.

The product of its (nonzero) digits is 23814, while the sum is 37.

The square root of 23779009 is about 4876.3725247360. The cubic root of 23779009 is about 287.5618377382.

The spelling of 23779009 in words is "twenty-three million, seven hundred seventy-nine thousand, nine".