23078009 has 2 divisors, whose sum is σ = 23078010. Its totient is φ = 23078008.

The previous prime is 23077991. The next prime is 23078017. The reversal of 23078009 is 90087032.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16687225 + 6390784 = 4085^2 + 2528^2 .

It is a cyclic number.

It is not a de Polignac number, because 23078009 - 2²⁴ = 6300793 is a prime.

It is not a weakly prime, because it can be changed into another prime (23075009) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11539004 + 11539005.

It is an arithmetic number, because the mean of its divisors is an integer number (11539005).

Almost surely, 2^23078009 is an apocalyptic number.

It is an amenable number.

23078009 is a deficient number, since it is larger than the sum of its proper divisors (1).

23078009 is an equidigital number, since it uses as much as digits as its factorization.

23078009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 3024, while the sum is 29.

The square root of 23078009 is about 4803.9576392803. The cubic root of 23078009 is about 284.7078528808.

The spelling of 23078009 in words is "twenty-three million, seventy-eight thousand, nine".