23750009 has 2 divisors, whose sum is σ = 23750010. Its totient is φ = 23750008.

The previous prime is 23749991. The next prime is 23750017. The reversal of 23750009 is 90005732.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 16974400 + 6775609 = 4120^2 + 2603^2 .

It is a cyclic number.

It is not a de Polignac number, because 23750009 - 2¹⁶ = 23684473 is a prime.

It is a Chen prime.

It is a self number, because there is not a number n which added to its sum of digits gives 23750009.

It is not a weakly prime, because it can be changed into another prime (23750809) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 11875004 + 11875005.

It is an arithmetic number, because the mean of its divisors is an integer number (11875005).

Almost surely, 2^23750009 is an apocalyptic number.

It is an amenable number.

23750009 is a deficient number, since it is larger than the sum of its proper divisors (1).

23750009 is an equidigital number, since it uses as much as digits as its factorization.

23750009 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 1890, while the sum is 26.

The square root of 23750009 is about 4873.3980957849. The cubic root of 23750009 is about 287.4448902561. Note that the first 3 decimals are identical.

The spelling of 23750009 in words is "twenty-three million, seven hundred fifty thousand, nine".