12293909 has 2 divisors, whose sum is σ = 12293910. Its totient is φ = 12293908.

The previous prime is 12293881. The next prime is 12293923. The reversal of 12293909 is 90939221.

It is a strong prime.

It can be written as a sum of positive squares in only one way, i.e., 12040900 + 253009 = 3470^2 + 503^2 .

It is a cyclic number.

It is not a de Polignac number, because 12293909 - 2¹² = 12289813 is a prime.

It is a super-2 number, since 2×12293909² = 302280397000562, which contains 22 as substring.

It is a Chen prime.

It is a congruent number.

It is not a weakly prime, because it can be changed into another prime (12293989) by changing a digit.

It is a polite number, since it can be written as a sum of consecutive naturals, namely, 6146954 + 6146955.

It is an arithmetic number, because the mean of its divisors is an integer number (6146955).

Almost surely, 2^12293909 is an apocalyptic number.

It is an amenable number.

12293909 is a deficient number, since it is larger than the sum of its proper divisors (1).

12293909 is an equidigital number, since it uses as much as digits as its factorization.

12293909 is an evil number, because the sum of its binary digits is even.

The product of its (nonzero) digits is 8748, while the sum is 35.

The square root of 12293909 is about 3506.2671033451. The cubic root of 12293909 is about 230.7969142658.

The spelling of 12293909 in words is "twelve million, two hundred ninety-three thousand, nine hundred nine".